Bob Geng, M.D.
Internal Medicine Physician · San Diego, CA
Bob Geng, M.D. is an internal medicine physician with a practice address in San Diego, California, and NPI 1356570758, issued on Jul 7, 2009. Check the license (California A121364, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Bob Geng
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A121364 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5776 Ruffin RD, San Diego, CA 92123
- Phone
- (858) 292-1144
- Enumerated
- Jul 7, 2009
- Entity
- Type 1 · individual
Also registered at 5776 Ruffin RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Martin Caha, MDPediatrics Physician1720548209
- Ethan Canty, MDPediatrics Physician1790312536
- Barbara Goergen, N.P.Nurse Practitioner1720150857
- Jill Greer, MS, RD, CNSCPediatric Nutrition Registered Dietitian1891047940
- Alexander Greiner, M.D.Allergy & Immunology Physician1609801299
- Mikaelah Kuenhold, FNP-CFamily Nurse Practitioner1164141164
Verify Bob Geng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A121364Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
69 Medicare Part D claims for 14 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 67% of claims.
Most prescribed
- Trelegy Ellipta18 claims
- Dupixent Syringe13 claims
- Montelukast Sodium13 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: $567,983.41
554 payments, mostly food and beverage; the largest payer was Genzyme Corporation. The 65,274 providers of this specialty with any payment received $2,536.66 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Rady Children's Hospital San DiegoSan Diego, 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.
1,049 internal medicine physician records list a San Diego practice address
They are 1,049 of the 52,937 NPPES records with a San Diego practice address, and 20,403 internal medicine physician records in California.
All 1,049 in San Diego → All 20,403 in California → Every provider in San Diego →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Bob Geng, M.D.'s NPI number?
Bob Geng, M.D.'s National Provider Identifier (NPI) is 1356570758, issued on Jul 7, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Bob Geng, M.D. located?
The NPPES record lists a practice address at 5776 Ruffin RD, San Diego, CA, 92123. Phone: (858) 292-1144. Providers update this record themselves, so call before visiting.
How can I verify Bob Geng, M.D.'s license?
NPPES lists California license number A121364, 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 Bob Geng, M.D. prescribe under Medicare Part D?
In 2024, Bob Geng, M.D. had 69 Medicare Part D claims for 14 beneficiaries; the average among internal medicine physician prescribers was 2,785. 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.