Registry data as of Aug 27, 2026

Nathaniel Gamsky, MD

Student in an Organized Health Care Education/Training Program · Pleasant Hill, CA

Nathaniel Gamsky, MD is a student in an organized health care education/training program with a practice address in Pleasant Hill, California, and NPI 1164955043, issued on Apr 6, 2017. Check the license (California A162343, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1164955043
Name
Nathaniel Gamsky
Credential
MD
Primary taxonomy
Student in an Organized Health Care Education/Training Program 390200000X
License number
A162343 CA
Self-reported in NPPES; status is on the state search
Practice location
2250 Morello Ave, Pleasant Hill, CA 94523
Phone
(925) 287-1256
Enumerated
Apr 6, 2017
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2250 Morello Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brooke Aber, P.A.Physician Assistant1790716074
  2. Amelia Atalig-Smith, RN, CCRN, ANPAdult Health Nurse Practitioner1063833192
  3. Sarah Eapen, PAPhysician Assistant1063947174
  4. Mahima Jain, P.A.Physician Assistant1730165093
  5. Ruben Kalra, M.D., M.B.AInterventional Pain Medicine Physician1245228766
  6. Ariana Nassiri, PA-CPhysician Assistant1669063681

Verify Nathaniel Gamsky in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license A162343
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

2% more Medicare Part D claims than the average student in an organized health care education/training program in 2024

499 Medicare Part D claims for 144 beneficiaries, against an average of 488 among the 106,422 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 307 claims were for opioids.

  1. Nathaniel Gamsky499
  2. Specialty average488

Most prescribed

  1. Hydrocodone-Acetaminophen134 claims
  2. Oxycodone Hcl41 claims
  3. Gabapentin39 claims
  4. Buprenorphine37 claims
  5. Nortriptyline Hcl36 claims
  6. Tramadol Hcl34 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $1,307.01

22 payments, mostly food and beverage; the largest payer was Mml US, Inc.. The 42,769 providers of this specialty with any payment received $1,210.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nathaniel Gamsky$1,307.01
  2. Specialty average$1,210.19

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital or facility affiliation

  1. Bass Medical GroupPleasant Hill, CA

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

28 student in an organized health care education/training program records list a Pleasant Hill practice address

They are 28 of the 843 NPPES records with a Pleasant Hill practice address, and 49,599 student in an organized health care education/training program records in California.

Other student in an organized health care education/training program records in California

  1. Sanad A'BasiFresno, CA1720915770
  2. Alexander Aabedi, MDSan Francisco, CA1245971480
  3. Andre AabediPomona, CA1891582102
  4. Natalie Aabodi, DMDPomona, CA1851085187
  5. Mati Aamed, PSY.D.Pacoima, CA1689285470
  6. Kjeld Aamodt, DDS, MSSan Francisco, CA1912250176
  7. Megan Aaronson, MD, MSCRLos Angeles, CA1386272102
  8. Manas AavulaPomona, CA1972496644
  9. Louisa AbadaOakland, CA1023502259
  10. Sharon AbadaSan Francisco, CA1003492844

Common questions

What is Nathaniel Gamsky, MD's NPI number?

Nathaniel Gamsky, MD's National Provider Identifier (NPI) is 1164955043, issued on Apr 6, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Nathaniel Gamsky, MD located?

The NPPES record lists a practice address at 2250 Morello Ave, Pleasant Hill, CA, 94523. Phone: (925) 287-1256. Providers update this record themselves, so call before visiting.

How can I verify Nathaniel Gamsky, MD's license?

NPPES lists California license number A162343, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Nathaniel Gamsky, MD prescribe under Medicare Part D?

In 2024, Nathaniel Gamsky, MD had 499 Medicare Part D claims for 144 beneficiaries; the average among student in an organized health care education/training program prescribers was 488. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.