NPPES file of Aug 9, 2026

Bobby Shan, DO, MS

Family Medicine Physician · Livermore, CA

Bobby Shan, DO, MS is a family medicine physician with a practice address in Livermore, California, and NPI 1609439470, issued on Apr 17, 2019. Check the license (California 20214, 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
1609439470
Name
Bobby Shan
Credential
DO, MS
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
20214 CA
Self-reported in NPPES; status is on the state search
Practice location
3000 Las Positas RD, Livermore, CA 94551
Phone
(925) 243-2600
Enumerated
Apr 17, 2019
Record last updated
Dec 7, 2022
Fax
(925) 243-2708
Medicare enrollment
Enrolled (PECOS I20221025000003); accepts Medicare assignment
Medical or professional school
Touro Un College Of Osteopathic Medicine, Vallejo, 2019
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 3000 Las Positas RD

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

  1. Chandran Arulanandan, MDInternal Medicine Physician1689752784
  2. Ian Bartos, MDPediatrics Physician1841372836
  3. Kimberly Becker, LCSWClinical Social Worker1689216707
  4. Jason Belk, PHARM.D.Pharmacist1609309723
  5. Aditi Bommireddy, MDObstetrics & Gynecology Physician1205398609
  6. Patrick Cahill, PTPhysical Therapist1497822803

Verify Bobby Shan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20214
    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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44% fewer Medicare Part D claims than the average family medicine physician in 2024

1,980 Medicare Part D claims for 335 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 60 claims were for opioids.

  1. Bobby Shan1,980
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium149 claims
  2. Amlodipine Besylate111 claims
  3. Losartan Potassium107 claims
  4. Levothyroxine Sodium63 claims
  5. Albuterol Sulfate Hfa56 claims
  6. Lisinopril49 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 IncLivermore, CA

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

Bobby Shan among 17,133 family medicine physician records in California

Bobby Shan, DO, MS is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.

  • NPI issued2019 · 85% of these records are older, 12% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2019 · median 2005 among the 10,652 with a school on file
  • Record last updated2022 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

20 family medicine physician records list a practice address in Livermore

They are 20 of the 994 NPPES records with a practice address in Livermore, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Mary Hyslop, RNLivermore, CA 945511013757657
  2. Komalpreet Kaur, MDLivermore, CA 945511811457658
  3. Melissa Lara, MDLivermore, CA 945511679211593
  4. Arshian Mahajan, M.D.Livermore, CA 945511164737623
  5. June Pan, MDLivermore, CA 945511184366544
  6. Simran WallerLivermore, CA 945511710415179
  7. Robert Abatecola, MDCastro Valley, CA 945521669551719
  8. Lalita Abhyankar, MD MHSLivermore, CA 945501689092439

Common questions

What is Bobby Shan, DO, MS's NPI number?

Bobby Shan, DO, MS's National Provider Identifier (NPI) is 1609439470, issued on Apr 17, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Bobby Shan, DO, MS located?

The NPPES record lists a practice address at 3000 Las Positas RD, Livermore, CA, 94551. Phone: (925) 243-2600. Providers update this record themselves, so call before visiting.

How can I verify Bobby Shan, DO, MS's license?

NPPES lists California license number 20214, 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 Bobby Shan, DO, MS prescribe under Medicare Part D?

In 2024, Bobby Shan, DO, MS had 1,980 Medicare Part D claims for 335 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.