NPPES file of Aug 9, 2026

Theodore R. Levin, MD

Gastroenterology Physician · Walnut Creek, CA

Theodore R. Levin, MD is a gastroenterology physician with a practice address in Walnut Creek, California, and NPI 1720166820, issued on Nov 2, 2006. Check the license (California G76096, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1720166820
Name
Theodore R. Levin
Credential
MD
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
G76096 CA
Self-reported in NPPES; status is on the state search
Practice location
1425 S Main St, Walnut Creek, CA 94596
Phone
(925) 295-4000
Enumerated
Nov 2, 2006
Record last updated
Dec 6, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicaid ID
00G760960 CA
Medicare enrollment
Enrolled (PECOS I20110107000055); accepts Medicare assignment
Medical or professional school
Emory University School Of Medicine, 1991
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 1425 S Main St

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

  1. Eric AaserudeEmergency Medicine Physician1811491194
  2. Derek Abbassi, MDObstetrics & Gynecology Physician1841364155
  3. Peter Ackerman, MDEmergency Medicine Physician1427435023
  4. Aaron Mark Acosta, DOEmergency Medicine Physician1538789987
  5. Basil Adad, MDOtolaryngology Physician1487732574
  6. Derek Ailes, M.D.Emergency Medical Services (Emergency Medicine) Physician1992001804

Verify Theodore R. Levin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G76096
    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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36% fewer Medicare Part D claims than the average gastroenterology physician in 2024

520 Medicare Part D claims for 170 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.

  1. Theodore Levin520
  2. Specialty average811

Most prescribed

  1. Omeprazole40 claims
  2. Famotidine36 claims
  3. Gavilyte-C35 claims
  4. Mesalamine29 claims
  5. Pantoprazole Sodium26 claims
  6. Cholestyramine23 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.

Bills Medicare through one group practice

  1. Permanente Medical Group IncWalnut Creek, CA

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

Theodore R. Levin among 2,140 gastroenterology physician records in California

Theodore R. Levin, MD is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 48% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated1991 · median 2002 among the 1,538 with a school on file
  • Record last updated2021 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in California

There are 2,140 gastroenterology physician records in California.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Eugene Chan, MDWalnut Creek, CA 945961528146610
  2. Suyi Chang, MDWalnut Creek, CA 945961972681468
  3. Daniel Chung, MDWalnut Creek, CA 945961063590552
  4. Ming Fang, MDWalnut Creek, CA 945961366520199
  5. Steven Fredman, MDWalnut Creek, CA 945961861570962
  6. Oliver Lin, M.D.Walnut Creek, CA 945961497981575
  7. Katharine Ozeki, M.D.Walnut Creek, CA 945961306290838
  8. Martha Turchyn-Mazuryk, MDWalnut Creek, CA 945961497821979

Common questions

What is Theodore R. Levin, MD's NPI number?

Theodore R. Levin, MD's National Provider Identifier (NPI) is 1720166820, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Theodore R. Levin, MD located?

The NPPES record lists a practice address at 1425 S Main St, Walnut Creek, CA, 94596. Phone: (925) 295-4000. Providers update this record themselves, so call before visiting.

How can I verify Theodore R. Levin, MD's license?

NPPES lists California license number G76096, 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 Theodore R. Levin, MD prescribe under Medicare Part D?

In 2024, Theodore R. Levin, MD had 520 Medicare Part D claims for 170 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

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.