NPPES file of Aug 9, 2026

Gregg A. Adams, MD

Surgery Physician · San Jose, CA

Gregg A. Adams, MD is a surgery physician with a practice address in San Jose, California, and NPI 1720175268, issued on Oct 6, 2006. Check the license (California G70824, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1720175268
Name
Gregg A. Adams
Credential
MD
Primary taxonomy
Surgery Physician 208600000X
License number
G70824 CA
Self-reported in NPPES; status is on the state search
Practice location
751 S Bascom Ave, San Jose, CA 95128
Phone
(408) 885-6060
Enumerated
Oct 6, 2006
Record last updated
Sep 10, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicaid ID
00G708240 CA
Medicare enrollment
Enrolled (PECOS I20090731000510); accepts Medicare assignment
Medical or professional school
Oregon Health Sciences University School Of Medicine, 1988
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 751 S Bascom Ave

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

  1. Puya Abbassi, D.O.Neurology Physician1831695428
  2. Abolghasem Abdoli, MDNeonatal-Perinatal Medicine Physician1790757441
  3. Erik Abernethy, PAPhysician Assistant1649577354
  4. Christopher Abrinko, RESIDENT PHYSICIANStudent in an Organized Health Care Education/Training Program1649017328
  5. Cherine Abu-Eid, MDAnesthesiology Physician1033173307
  6. Pallavi AcharyaClinical Social Worker1154807873

Verify Gregg A. Adams in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G70824
    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
Open 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.

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71% fewer Medicare Part D claims than the average surgery physician in 2024

42 Medicare Part D claims for 17 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D.

  1. Gregg Adams42
  2. Specialty average147

Most prescribed

  1. Gabapentin11 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 80.6 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score67.4
  2. Costout of 100 · 30%46.5
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $7.22

1 payment: education; the largest payer was Btg International, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gregg Adams$7.22
  2. Specialty average$3,513.80

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

Bills Medicare through one group practice

  1. County OF Santa ClaraSan Jose, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gregg A. Adams among 3,118 surgery physician records in California

Gregg A. Adams, MD is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 55% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated1988 · median 2003 among the 1,901 with a school on file
  • Record last updated2007 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in California

There are 3,118 surgery physician records in California.

The 8 surgery physician records with the nearest ZIP codes

  1. Angela Chen, MDSan Jose, CA 951281720003791
  2. Cassandra Chow, M.D.San Jose, CA 951281104083583
  3. Adela Garland, MDSan Jose, CA 951281649368754
  4. Patrick Gartland, M.D.San Jose, CA 951281295700995
  5. Amy Gonsier, M.D.San Jose, CA 951281396790853
  6. Ronald Jou, M.D.San Jose, CA 951281548456718
  7. Jin Lee, MDSan Jose, CA 951281891890570
  8. Daniel Riskin, MDSan Jose, CA 951281356479463

Common questions

What is Gregg A. Adams, MD's NPI number?

Gregg A. Adams, MD's National Provider Identifier (NPI) is 1720175268, issued on Oct 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gregg A. Adams, MD located?

The NPPES record lists a practice address at 751 S Bascom Ave, San Jose, CA, 95128. Phone: (408) 885-6060. Providers update this record themselves, so call before visiting.

How can I verify Gregg A. Adams, MD's license?

NPPES lists California license number G70824, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gregg A. Adams, MD prescribe under Medicare Part D?

In 2024, Gregg A. Adams, MD had 42 Medicare Part D claims for 17 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.

What is Gregg A. Adams, MD's MIPS final score?

The 2023 MIPS final score is 80.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.