Dr. Devon Sittlow Callahan, MD

  • West Hollywood, CA
  • General surgeon
NPI1528315181PAC ID2961774468
Medicare services, 2024
86
Medicare patients, 2024
54
Part D claims, 2021
12
Publications
3
MIPS score, 2024
93
Practice address
8700 Beverly Blvd, Los Angeles, CA 90048
Practice phone
Call (310) 423-5000
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Cedars-Sinai Medical Center

Hospital · Los Angeles, California

See all 5 affiliations

Find Dr. Callahan's professional email, personal email and mobile number

Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.

View contacts for free

Dr. Devon Sittlow Callahan is a general surgeon in West Hollywood, California

Dr. Callahan practices at Cedars-Sinai Medical Center in Los Angeles, California, part of Cedars-Sinai Health System.

Dr. Callahan's NPI, 1528315181, was assigned on August 13, 2012. Dr. Callahan graduated from Vagelos College of Physicians and Surgeons in 2012. Dr. Callahan's California license number on file is A128652.

NPI and contact details
Medicare PAC ID
2961774468
NPI enumeration date
August 13, 2012
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(310) 423-5000
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
40
Medical school graduation
2012

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Devon Sittlow Callahan practices at Cedars-Sinai Medical Center in Los Angeles, California

Dr. Callahan's primary practice is Cedars-Sinai Medical Center, at 8700 Beverly Blvd, Los Angeles, CA 90048 in Los Angeles County. The practice phone is (310) 423-5000.

Source: Dmand AI Affiliation Data

Dr. Devon Sittlow Callahan is affiliated with 3 sites of care and 2 medical groups

Dr. Callahan's primary practice is Cedars-Sinai Medical Center in Los Angeles, California, part of Cedars-Sinai Health System. Dr. Callahan is also affiliated with Cedars-Sinai Marina Hospital. The medical group on file is Cedars-Sinai Medical Center. Dmand AI also links Dr. Callahan to 1 more group practice or clinic and 1 medical group, each named with a free account.

See all 5 affiliations for Dr. Callahan

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Devon Sittlow Callahan's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Callahan practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Cedars-Sinai Medical CenterAvailable with a free account
+2 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every hospital where Dr. Callahan practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across Cedars-Sinai Health System and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Devon Sittlow Callahan is one of 2,926 general surgeons in California

Surgery is Dr. Callahan's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Callahan is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Callahan's licenses on file in 2 states: California and Minnesota.

Specialties and state licenses

  • Surgery, CaliforniaPrimaryLicense A128652 · 2014 to 2025 · taxonomy 208600000X
  • Minnesota licenseLicense 61007 · 2016 to 2023

Clinical focus

Dmand AI lists abdominal adhesion surgery, acute gallbladder or bile duct inflammation, appendectomy, colon removal, esophagus, stomach, or upper small intestine surgery, gallbladder removal, groin hernia surgery and removal of damaged skin or skin graft among the conditions Dr. Callahan treats.

General surgeons near Dr. Callahan

Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Devon Sittlow Callahan billed Medicare for 86 services in 2024

CMS data shows 86 Medicare services from Dr. Callahan across 3 procedure codes in 2024, for 54 Medicare patients. Medicare paid $11,220 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202486
Medicare patients54
Paid by Medicare$11,220
Procedure codes3

Dr. Callahan's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 882024: 862%

Dr. Callahan compared with the California median for general surgeons, 2024

  • Dr. Callahan
  • California median
Medicare services
86vs 16648% below
Medicare patients
54vs 12155% below
Part D claims
12vs 3465% below

Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.

Dr. Callahan's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Callahan

Need commercial claims for Dr. Callahan?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Callahan and other general surgeons in California.

Book a meeting

Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Devon Sittlow Callahan treated 54 Medicare patients in 2024, average age 76

CMS counts 54 Medicare patients who saw Dr. Callahan in 2024. The largest group is 65 to 74, with 18 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 52% are also on Medicaid. Their average risk score is 3.67, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Callahan's median patient age at 55, with 41% women.

Medicare patients, 202454
Average age76
Average risk score3.67
Also on Medicaid52%

Dr. Callahan's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Callahan's Medicare patients by sex, 2024

  • Women3056%
  • Men2444%

Chronic conditions among Dr. Callahan's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Chronic kidney disease63%
  4. Arthritis57%
  5. Heart failure56%
  6. Diabetes52%
  7. Ischemic heart disease50%
  8. Anxiety44%

Share of Medicare patients with each condition. A patient can have several.

Dr. Callahan's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 55

Patient panel by sex, all payers

  • Women41%
  • Men58%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Devon Sittlow Callahan wrote 12 Medicare Part D claims in 2021

In 2021, Dr. Callahan wrote 12 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $35 in total drug cost. In 2019, CMS named 21 claims across 1 drug.

Part D claims, 202112
Drugs named by CMS1
Total drug cost$35

Dr. Callahan's most prescribed drugs by claims, 2021

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2019 to 2021

  • 2019
  • 2021
Claims for drugs CMS names
2019: 212021: 1243%

Drugs named by CMS: 1 in 2021, 1 in 2019.

See all prescribing by Dr. Callahan

Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026

Dr. Devon Sittlow Callahan scored 93 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Callahan for performance year 2024, reported as part of a group. Dr. Callahan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Callahan's MIPS scores, performance year 2024

  • 93of 100Final score
  • 77.8of 100Quality
  • 98of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 71of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

For MedTech and pharma teams

Find general surgeons like Dr. Callahan by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

Dr. Devon Sittlow Callahan has 3 publications on record

Dmand AI links 3 papers to Dr. Callahan, published from 2014 to 2016. Dr. Callahan's most frequent co-authors are Hamid Alipour, MD, Scott David Bricker, MD and Areti Tillou, MD.

Papers3
Years published2014 to 2016

Dr. Callahan's papers by year, 2014 to 2016

Dr. Callahan's most frequent co-authors

Recent publications by Dr. Callahan

See all 3 publications and co-authors

See who Dr. Callahan researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Callahan works with, so you can find a warm path to the right general surgeons.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Devon Sittlow Callahan received $5,223 in industry payments from 2016 to 2025

CMS Open Payments shows 32 general payments to Dr. Callahan from 9 drug and device companies from 2016 to 2025. Education make up the largest share, 48% of the total. Intuitive Surgical, Inc. paid the most, $4,435. It also lists 2 research payments totaling $990 in 2017.

General payments to Dr. Callahan by program year, 2016 to 2025

General payments to Dr. Callahan by kind, 2016 to 2025

$5.2Kin total
  • Education$2,50048%
  • Travel and lodging$1,87636%
  • Consulting fees$4889%
  • Food and beverage$3607%

Companies that paid Dr. Callahan the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Callahan

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Devon Sittlow Callahan graduated from Vagelos College of Physicians and Surgeons

Dr. Callahan graduated from Vagelos College of Physicians and Surgeons in 2012.

  1. Medical schoolVagelos College of Physicians and Surgeons
  2. Board certified in surgeryAmerican Board of Surgery
  3. Board certified in surgical critical careAmerican Board of Surgery

Source: Dmand AI Professional Profile Data

Dr. Devon Sittlow Callahan accepts plans from 16 insurance carriers

Dr. Callahan is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Medica. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • Medica
  • United Healthcare
  • Elevance
  • HCSC
  • Alliant Health Plans
  • Blue Cross Blue Shield of Massachusetts
  • +8 more carriersWith a free account

Plan types Dr. Callahan accepts, by number of carriers

  1. PPO11
  2. HMO7
  3. Medicare6
  4. POS6
  5. EPO4
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Devon Sittlow Callahan's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Devon Sittlow Callahan

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Devon Sittlow Callahan's NPI number?

Dr. Devon Sittlow Callahan's NPI number is 1528315181. It was assigned on August 13, 2012, and it is active in the NPI Registry.

What kind of doctor is Dr. Devon Sittlow Callahan?

Dr. Devon Sittlow Callahan is a general surgeon in West Hollywood, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).

Where does Dr. Devon Sittlow Callahan practice?

Dr. Callahan practices at 8700 Beverly Blvd, Los Angeles, CA 90048. Dr. Callahan's primary practice is Cedars-Sinai Medical Center in Los Angeles, California, part of Cedars-Sinai Health System. Dmand AI also links Dr. Callahan to 1 group practice or clinic and 1 medical group.

What is Dr. Devon Sittlow Callahan's office phone number?

The practice phone on file for Dr. Callahan is (310) 423-5000.

What is Dr. Devon Sittlow Callahan's medical license number?

Dr. Callahan's California license number on file is A128652, one of the licenses on file in 2 states.

Which states has Dr. Devon Sittlow Callahan been licensed in?

Dmand AI has state licenses on file for Dr. Callahan in California (2014 to 2025) and Minnesota (2016 to 2023).

Which hospitals is Dr. Devon Sittlow Callahan affiliated with?

Dr. Callahan practices at Cedars-Sinai Medical Center in Los Angeles, California. Dr. Callahan is also affiliated with Cedars-Sinai Marina Hospital.

What medical group is Dr. Devon Sittlow Callahan part of?

Dr. Callahan is linked to Cedars-Sinai Medical Center. Dmand AI links Dr. Callahan to 1 more medical group.

Does Dr. Devon Sittlow Callahan accept Medicare?

Yes. CMS data shows Dr. Callahan billed Medicare for 86 services in 2024, and Dr. Callahan accepts Medicare assignment.

What is Dr. Devon Sittlow Callahan's MIPS score?

Dr. Callahan's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Devon Sittlow Callahan see?

CMS counts 54 Medicare patients who saw Dr. Callahan in 2024, with an average age of 76.

Is Dr. Devon Sittlow Callahan board certified?

Yes. Dr. Callahan is board certified in surgery by the American Board of Surgery.

What services does Dr. Devon Sittlow Callahan bill to Medicare?

In 2024, Dr. Callahan's most billed Medicare services were critical care (99291), hospital inpatient care (99232) and hospital inpatient care (99223).

Where did Dr. Devon Sittlow Callahan go to medical school?

Dr. Callahan graduated from Vagelos College of Physicians and Surgeons in 2012.

What drugs does Dr. Devon Sittlow Callahan prescribe most?

In 2021 Medicare Part D data, Dr. Callahan's most prescribed drugs by claims were Oxycodone HCl.

Has Dr. Devon Sittlow Callahan received payments from drug or device companies?

CMS Open Payments shows $5,223 in general payments to Dr. Callahan from 9 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.

How long has Dr. Devon Sittlow Callahan been practicing?

Dr. Callahan graduated from medical school in 2012, 14 years ago.

Does Dr. Devon Sittlow Callahan do research?

Dmand AI links 3 publications to Dr. Callahan, published from 2014 to 2016.

Who does Dr. Devon Sittlow Callahan publish with?

Dr. Callahan's most frequent co-authors are Hamid Alipour, MD (1 shared paper), Scott David Bricker, MD (1 shared paper) and Areti Tillou, MD (1 shared paper).

What insurance does Dr. Devon Sittlow Callahan accept?

Dr. Callahan is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Medica. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.

Selling to surgery practices?

See general surgeons in California by site of care and group

Find the practices, groups and hospitals they work with, and the right people to contact at each.

  • 30 days free
  • Self-serve
  • No credit card

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)