Dr. Joshua Lee Partnow, MD

  • Los Angeles, CA
  • Emergency medicine physician
NPI1245338409
Medicare services, 2024
241
Medicare patients, 2024
156
Part D claims, 2024
177
MIPS score, 2024
100
Hospital affiliations
1
Practice address
1401 South Grand Avenue, Los Angeles, CA 90015
Practice phone
Call (213) 748-2411
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Dignity Health - California Hospital Medical Center

Hospital · Los Angeles, California

See all 4 affiliations

Find Dr. Partnow'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. Joshua Lee Partnow is an emergency medicine physician in Los Angeles, California

Dr. Partnow practices at Dignity Health - California Hospital Medical Center in Los Angeles, California, part of CommonSpirit Health.

Dr. Partnow's NPI, 1245338409, was assigned on September 20, 2006. Dr. Partnow graduated from Rutgers New Jersey Medical School in 2001. Dr. Partnow's New Jersey license number on file is 25MA00774270.

NPI and contact details
NPI enumeration date
September 20, 2006
NPI status
Active
Practice phone
(213) 748-2411
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Medical school graduation
2001

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

Dr. Joshua Lee Partnow practices at Dignity Health - California Hospital Medical Center in Los Angeles, California

Dr. Partnow's primary practice is Dignity Health - California Hospital Medical Center, at 1401 South Grand Avenue, Los Angeles, CA 90015 in Los Angeles County. The practice phone is (213) 748-2411.

Source: Dmand AI Affiliation Data

Dr. Joshua Lee Partnow is affiliated with 1 site of care and 3 medical groups

Dr. Partnow's primary practice is Dignity Health - California Hospital Medical Center in Los Angeles, California, part of CommonSpirit Health. The medical group on file is Golden State Emergency Physicians, Inc. Dmand AI also links Dr. Partnow to 2 more medical groups, each named with a free account.

See all 4 affiliations for Dr. Partnow

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

Dmand AI tracks the EHR system at Dr. Joshua Lee Partnow's practice

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

EHR by site
SiteEHR vendor and product
Dignity Health - California Hospital Medical CenterAvailable with a free account
+2 medical groupsAvailable 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. Partnow practices

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

Dr. Joshua Lee Partnow is one of 7,423 emergency medicine physicians in California

Emergency medicine is Dr. Partnow's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Partnow is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Partnow's licenses on file in 4 states: New Jersey, California, New York and Hawaii.

Specialties and state licenses

  • Emergency medicine, New JerseyPrimaryLicense 25MA00774270 · 2004 to 2009 · taxonomy 207P00000X
  • California license2006 to 2026
  • New York license2003 to 2026
  • Hawaii license2016 to 2022

Emergency medicine physicians near Dr. Partnow

Counts of emergency medicine physicians 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. Joshua Lee Partnow billed Medicare for 241 services in 2024

CMS data shows 241 Medicare services from Dr. Partnow across 4 procedure codes in 2024, for 156 Medicare patients. Medicare paid $21,181 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024241
Medicare patients156
Paid by Medicare$21,181
Procedure codes4

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

  • 2023
  • 2024
Office and hospital visits
2023: 2222024: 15829%
Tests and treatments
2023: 1562024: 8347%

Dr. Partnow compared with the California median for emergency medicine physicians, 2024

  • Dr. Partnow
  • California median
Medicare services
241vs 2659% below
Medicare patients
156vs 24336% below
Part D claims
31vs 6250% below

Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.

Dr. Partnow'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. Partnow

Need commercial claims for Dr. Partnow?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Partnow and other emergency medicine physicians in California.

Book a meeting

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

Dr. Joshua Lee Partnow treated 156 Medicare patients in 2024, average age 69

CMS counts 156 Medicare patients who saw Dr. Partnow in 2024. The largest group is 65 to 74, with 58 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 65% are also on Medicaid. Their average risk score is 2.15, 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. Partnow's median patient age at 41, with 55% women.

Medicare patients, 2024156
Average age69
Average risk score2.15
Also on Medicaid65%

Dr. Partnow's Medicare patients by age, 2024

Dr. Partnow's Medicare patients by sex, 2024

  • Women7548%
  • Men8152%

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

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis56%
  4. Diabetes50%
  5. Mood disorders40%
  6. Anxiety39%
  7. Chronic kidney disease37%
  8. Depression35%

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

Dr. Partnow's patients across all payers

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

Patient panel by age, all payers

Median age 41

Patient panel by sex, all payers

  • Women55%
  • Men45%

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

Dr. Joshua Lee Partnow wrote 177 Medicare Part D claims in 2024

In 2024, Dr. Partnow wrote 177 Medicare Part D claims for 103 patients. 95% of them were for generic drugs. CMS names the drug for 31 of them, across 1 drug with 11 or more claims each, at $126 in total drug cost. In 2023, CMS named 46 claims across 2 drugs.

Part D claims, 2024177
Drugs named by CMS1
Total drug cost$126
Part D patients103

Dr. Partnow's Part D claims by kind of drug, 2024

  • Generic168 claims95%
  • Brand-name and other9 claims5%

Dr. Partnow's most prescribed drugs by claims, 2024

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

Drug classes CMS tracks in Dr. Partnow's Part D claims, 2024

  • Antibiotics37%65 of 177 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 462024: 3133%

Drugs named by CMS: 1 in 2024, 2 in 2023.

See all prescribing by Dr. Partnow

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

Dr. Joshua Lee Partnow scored 100 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Partnow for performance year 2024, reported as part of a group.

Dr. Partnow's MIPS scores, performance year 2024

  • 100of 100Final score
  • 92.6of 100Quality
  • 40of 100Improvement Activities

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

Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

For MedTech and pharma teams

Find emergency medicine physicians like Dr. Partnow 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. Joshua Lee Partnow received $487 in industry payments from 2017 to 2022

CMS Open Payments shows 6 general payments to Dr. Partnow from 6 drug and device companies from 2017 to 2022. Food and beverage make up the largest share, 59% of the total. Radiometer America, Inc paid the most, $200.

General payments to Dr. Partnow by program year, 2017 to 2022

General payments to Dr. Partnow by kind, 2017 to 2022

$487in total
  • Food and beverage$28759%
  • Consulting fees$20041%

Companies that paid Dr. Partnow the most, 2017 to 2022

Share is of all general payments to this clinician.

See all payments to Dr. Partnow

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

Dr. Joshua Lee Partnow graduated from Rutgers New Jersey Medical School

Dr. Partnow graduated from Rutgers New Jersey Medical School in 2001.

  1. Medical schoolRutgers New Jersey Medical School
  2. Board certified in emergency medicineAmerican Board of Emergency Medicine

Source: Dmand AI Professional Profile Data

Dr. Joshua Lee Partnow accepts plans from 5 insurance carriers

Dr. Partnow is in network with 5 carriers, including United Healthcare, Blue Cross and Blue Shield of Kansas City and DentaQuest. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.

  • United Healthcare
  • Blue Cross and Blue Shield of Kansas City
  • DentaQuest
  • Elevance
  • HCSC

Plan types Dr. Partnow accepts, by number of carriers

  1. PPO3
  2. HMO2
  3. EPO1
  4. Medicare1
  5. POS1

Source: Dmand AI Insurance Network Data

Sources for Dr. Joshua Lee Partnow'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)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesClinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
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. Joshua Lee Partnow

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. Joshua Lee Partnow's NPI number?

Dr. Joshua Lee Partnow's NPI number is 1245338409. It was assigned on September 20, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Joshua Lee Partnow?

Dr. Joshua Lee Partnow is an emergency medicine physician in Los Angeles, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Dr. Joshua Lee Partnow practice?

Dr. Partnow practices at 1401 South Grand Avenue, Los Angeles, CA 90015. Dr. Partnow's primary practice is Dignity Health - California Hospital Medical Center in Los Angeles, California, part of CommonSpirit Health. Dmand AI also links Dr. Partnow to 2 medical groups.

What is Dr. Joshua Lee Partnow's office phone number?

The practice phone on file for Dr. Partnow is (213) 748-2411.

What is Dr. Joshua Lee Partnow's medical license number?

Dr. Partnow's New Jersey license number on file is 25MA00774270, one of the licenses on file in 4 states.

Which states has Dr. Joshua Lee Partnow been licensed in?

Dmand AI has state licenses on file for Dr. Partnow in New Jersey (2004 to 2009), California (2006 to 2026), New York (2003 to 2026) and Hawaii (2016 to 2022).

Which hospitals is Dr. Joshua Lee Partnow affiliated with?

Dr. Partnow practices at Dignity Health - California Hospital Medical Center in Los Angeles, California.

What medical group is Dr. Joshua Lee Partnow part of?

Dr. Partnow is linked to Golden State Emergency Physicians, Inc. Dmand AI links Dr. Partnow to 2 more medical groups.

Does Dr. Joshua Lee Partnow accept Medicare?

Yes. CMS data shows Dr. Partnow billed Medicare for 241 services in 2024.

What is Dr. Joshua Lee Partnow's MIPS score?

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

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Joshua Lee Partnow see?

CMS counts 156 Medicare patients who saw Dr. Partnow in 2024, with an average age of 69.

Is Dr. Joshua Lee Partnow board certified?

Yes. Dr. Partnow is board certified in emergency medicine by the American Board of Emergency Medicine.

What services does Dr. Joshua Lee Partnow bill to Medicare?

In 2024, Dr. Partnow's most billed Medicare services were heart test or procedure (93010), emergency department visit (99285) and critical care (99291).

Where did Dr. Joshua Lee Partnow go to medical school?

Dr. Partnow graduated from Rutgers New Jersey Medical School in 2001.

What drugs does Dr. Joshua Lee Partnow prescribe most?

In 2024 Medicare Part D data, Dr. Partnow's most prescribed drugs by claims were Cephalexin.

Has Dr. Joshua Lee Partnow received payments from drug or device companies?

CMS Open Payments shows $487 in general payments to Dr. Partnow from 6 companies from 2017 to 2022. The largest total came from Radiometer America, Inc.

How long has Dr. Joshua Lee Partnow been practicing?

Dr. Partnow graduated from medical school in 2001, 25 years ago.

What insurance does Dr. Joshua Lee Partnow accept?

Dr. Partnow is in network with 5 carriers, including United Healthcare, Blue Cross and Blue Shield of Kansas City and DentaQuest. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.

Selling to emergency medicine practices?

See emergency medicine physicians 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)