Dr. Gary Neil Mann, MD

  • Los Angeles, CA
  • General surgeon
NPI1760567572PAC ID1951436302
Medicare services, 2024
37
Medicare patients, 2024
54
Part D claims, 2024
18
Publications
39
Hospital affiliations
1
Practice address
344 S Hauser Blvd, Los Angeles, CA 90036
Practice phone
Call (716) 845-2300
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Roswell Park Cancer Institute

Los Angeles, California

See all 3 affiliations

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Dr. Gary Neil Mann is a general surgeon in Los Angeles, California

Dr. Mann practices at Roswell Park Cancer Institute in Los Angeles, California.

Dr. Mann's NPI, 1760567572, was assigned on October 27, 2006. Dr. Mann graduated from University of the Witwatersrand in 1989. Dr. Mann's New York license number on file is 286574.

NPI and contact details
Medicare PAC ID
1951436302
NPI enumeration date
October 27, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(716) 845-2300
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
63
Medical school graduation
1989

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

Dr. Gary Neil Mann practices at Roswell Park Cancer Institute in Los Angeles, California

Dr. Mann's primary practice is Roswell Park Cancer Institute, at 344 S Hauser Blvd, Los Angeles, CA 90036 in Los Angeles County. The practice phone is (716) 845-2300.

  • Roswell Park Cancer Institute
    344 S Hauser Blvd, Los Angeles, CA 90036 · Los Angeles CountyPhone(716) 845-2300

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Gary Neil Mann is affiliated with 2 sites of care and 1 medical group

Dr. Mann's primary practice is Roswell Park Cancer Institute in Los Angeles, California. Dr. Mann is also affiliated with Roswell Park Comprehensive Cancer Center. The medical group on file is Roswell Park Comprehensive Cancer Center.

See all 3 affiliations for Dr. Mann

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Gary Neil Mann's practice

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

EHR by site
SiteEHR vendor and product
Roswell Park Cancer InstituteAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Gary Neil Mann is one of 2,926 general surgeons in California

Surgery is Dr. Mann's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Mann is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Mann's licenses on file in 4 states: New York, California, Texas and Washington.

Specialties and state licenses

  • Surgery, New YorkPrimaryLicense 286574 · 2016 to 2025 · taxonomy 208600000X
  • California licenseSince 1998
  • Texas licenseLicense Q5859 · 2015 to 2017
  • Surgical oncology, WashingtonLicense MD00038838 · 2000 to 2017 · taxonomy 2086X0206X

Clinical focus

Dmand AI lists colonoscopy, colon removal, esophagus, stomach, or upper small intestine surgery, gallbladder removal and gastrointestinal obstruction among the conditions Dr. Mann treats.

General surgeons near Dr. Mann

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. Gary Neil Mann billed Medicare for 37 services in 2024

CMS data shows 37 Medicare services from Dr. Mann across 2 procedure codes in 2024, all of them office visits, for 54 Medicare patients. Medicare paid $2,948 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202437
Medicare patients54
Paid by Medicare$2,948
Procedure codes2

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

  • 2023
  • 2024
Office and hospital visits
2023: 122024: 37208%

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

  • Dr. Mann
  • California median
Medicare services
37vs 16678% below
Medicare patients
54vs 12155% below

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

Dr. Mann'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. Mann

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

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

Dr. Gary Neil Mann treated 54 Medicare patients in 2024, average age 71

CMS counts 54 Medicare patients who saw Dr. Mann in 2024. The largest group is 65 to 74, with 38 patients. 75% of them have high blood pressure, and 72% have high cholesterol. Their average risk score is 2.02, 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. Mann's median patient age at 70, with 56% women.

Medicare patients, 202454
Average age71
Average risk score2.02

Dr. Mann's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Mann's Medicare patients by sex, 2024

  • Women3463%
  • Men2037%

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

  1. High blood pressure75%
  2. High cholesterol72%
  3. Cancer61%
  4. Arthritis48%
  5. Anxiety31%
  6. Chronic kidney disease30%
  7. Diabetes28%
  8. Mood disorders22%

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

Dr. Mann's patients across all payers

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

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women56%
  • Men44%

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

Dr. Gary Neil Mann wrote 18 Medicare Part D claims in 2024

In 2024, Dr. Mann wrote 18 Medicare Part D claims. 94% of them were for generic drugs.

Part D claims, 202418

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

  • Generic17 claims94%
  • Brand-name and other1 claims6%

Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Gary Neil Mann takes part in Medicare

Dr. Mann accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

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

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Gary Neil Mann has 39 publications on record

Dmand AI links 39 papers to Dr. Mann, published from 2006 to 2024. 2017 was the busiest year, with 5. The most frequent topics are Antineoplastic Combined Chemotherapy Protocols, Chemotherapy, Adjuvant and Cytoreduction Surgical Procedures. Dr. Mann has published most often in Ann Surg Oncol. Dr. Mann's most frequent co-authors are Keith Francis Fournier, MD, Michael J. Overman, MD and Richard Eldon Royal, MD.

Papers39
Years published2006 to 2024

Dr. Mann's papers by year, 2014 to 2024

Topics Dr. Mann writes about most

  • Antineoplastic Combined Chemotherapy Protocols
  • Chemotherapy, Adjuvant
  • Cytoreduction Surgical Procedures
  • Peritoneal Neoplasms
  • Appendiceal Neoplasms
  • Breast Neoplasms
  • Chemotherapy, Cancer, Regional Perfusion
  • Hyperthermia, Induced

Dr. Mann's most frequent co-authors

Recent publications by Dr. Mann

See all 39 publications and co-authors

See who Dr. Mann researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Mann 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. Gary Neil Mann received $360 in industry payments from 2016 to 2019

CMS Open Payments shows 11 general payments to Dr. Mann from 7 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Intuitive Surgical, Inc. paid the most, $148.

General payments to Dr. Mann by program year, 2016 to 2019

Companies that paid Dr. Mann the most, 2016 to 2019

Share is of all general payments to this clinician.

See all payments to Dr. Mann

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

Dr. Gary Neil Mann has 1 award and honors on record

Dmand AI lists 1 award for Dr. Mann.

Awards and honors for Dr. Mann

  1. Undated
    • ACS Fellow

Source: Dmand AI Professional Profile Data

Dr. Gary Neil Mann graduated from University of the Witwatersrand

Dr. Mann graduated from University of the Witwatersrand in 1989. Dr. Mann is a member of ACS.

  1. Medical schoolUniversity of the Witwatersrand
  2. Board certified in surgeryAmerican Board of Surgery

Source: Dmand AI Professional Profile Data

Dr. Gary Neil Mann accepts plans from 7 insurance carriers

Dr. Mann is in network with 7 carriers, including Aetna, Excellus BlueCross BlueShield and MVP Health Care. EPO plans come from the most carriers, 4. Check the plan with the practice before a visit.

  • Aetna
  • Excellus BlueCross BlueShield
  • MVP Health Care
  • Highmark
  • AK State Medicaid
  • CMS Medicare
  • NY State Medicaid

Plan types Dr. Mann accepts, by number of carriers

  1. EPO4
  2. PPO4
  3. HMO3
  4. Medicaid3
  5. Medicare3
  6. POS3

Source: Dmand AI Insurance Network Data

Sources for Dr. Gary Neil Mann'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 phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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 (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (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)
Awards and committee rolesDmand AI Professional Profile Data
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. Gary Neil Mann

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. Gary Neil Mann's NPI number?

Dr. Gary Neil Mann's NPI number is 1760567572. It was assigned on October 27, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Gary Neil Mann?

Dr. Gary Neil Mann is a general surgeon in Los Angeles, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).

Where does Dr. Gary Neil Mann practice?

Dr. Mann practices at 344 S Hauser Blvd, Los Angeles, CA 90036. Dr. Mann's primary practice is Roswell Park Cancer Institute in Los Angeles, California.

What is Dr. Gary Neil Mann's office phone number?

The practice phone on file for Dr. Mann is (716) 845-2300.

What is Dr. Gary Neil Mann's medical license number?

Dr. Mann's New York license number on file is 286574, one of the licenses on file in 4 states.

Which states has Dr. Gary Neil Mann been licensed in?

Dmand AI has state licenses on file for Dr. Mann in New York (2016 to 2025), California (since 1998), Texas (2015 to 2017) and Washington (2000 to 2017).

Which hospitals is Dr. Gary Neil Mann affiliated with?

Dr. Mann is affiliated with Roswell Park Comprehensive Cancer Center.

What medical group is Dr. Gary Neil Mann part of?

Dr. Mann is linked to Roswell Park Comprehensive Cancer Center.

Does Dr. Gary Neil Mann accept Medicare?

Yes. CMS data shows Dr. Mann billed Medicare for 37 services in 2024, and Dr. Mann accepts Medicare assignment.

How many Medicare patients does Dr. Gary Neil Mann see?

CMS counts 54 Medicare patients who saw Dr. Mann in 2024, with an average age of 71.

Show 8 more questionsShow fewer questions

Is Dr. Gary Neil Mann board certified?

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

What services does Dr. Gary Neil Mann bill to Medicare?

In 2024, Dr. Mann's most billed Medicare services were office visit, established patient (99215) and office visit, established patient (99213).

Where did Dr. Gary Neil Mann go to medical school?

Dr. Mann graduated from University of the Witwatersrand in 1989.

Has Dr. Gary Neil Mann received payments from drug or device companies?

CMS Open Payments shows $360 in general payments to Dr. Mann from 7 companies from 2016 to 2019. The largest total came from Intuitive Surgical, Inc.

How long has Dr. Gary Neil Mann been practicing?

Dr. Mann graduated from medical school in 1989, 37 years ago.

Does Dr. Gary Neil Mann do research?

Dmand AI links 39 publications to Dr. Mann, published from 2006 to 2024.

Who does Dr. Gary Neil Mann publish with?

Dr. Mann's most frequent co-authors are Keith Francis Fournier, MD (6 shared papers), Michael J. Overman, MD (5 shared papers) and Richard Eldon Royal, MD (4 shared papers).

What insurance does Dr. Gary Neil Mann accept?

Dr. Mann is in network with 7 carriers, including Aetna, Excellus BlueCross BlueShield and MVP Health Care. EPO plans come from the most carriers, 4. Check the plan with the practice before a visit.

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