NPPES file of Aug 9, 2026

Robin Marcellus Dennings, M.D.

Anesthesiology Physician · San Ramon, CA

Robin Marcellus Dennings, M.D. is an anesthesiology physician with a practice address in San Ramon, California, and NPI 1649265349, issued on Sep 19, 2005. Check the license (California G79204, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1649265349
Name
Robin Marcellus Dennings
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
G79204 CA
Self-reported in NPPES; status is on the state search
Practice location
200 Porter Dr, San Ramon, CA 94583
Phone
(925) 838-6880
Enumerated
Sep 19, 2005
Record last updated
Jun 30, 2024
Medicare enrollment
Enrolled (PECOS I20050412001135); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 1992
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 200 Porter Dr

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

  1. Mir Ali, M.D.Anesthesiology Physician1417912726
  2. Laura Anaya, PAPhysician Assistant1316117682
  3. Claudine Cho, PNPPediatric Nurse Practitioner1285005074
  4. Julie Choate, PTPhysical Therapist1124060470
  5. Arthur Chu, PTPhysical Therapist1477812998
  6. Kevin Fridie, M.D.Anesthesiology Physician1134109119

Verify Robin Marcellus Dennings in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G79204
    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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Bills Medicare through one group practice

  1. Empire Anesthesia IncSan Ramon, CA

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

20 anesthesiology physician records list a practice address in San Ramon

They are 20 of the 2,281 NPPES records with a practice address in San Ramon, and 7,571 anesthesiology physician records in California.

Other anesthesiology physician records in California

  1. Alison A'Court, MDSan Diego, CA1912218199
  2. Elma Abad-Pelsang, MDDel Mar, CA1689611923
  3. Rolando Abada, M.D.San Diego, CA1952319071
  4. Maher Abadir, MDTurlock, CA1669491718
  5. Jerry Abajian, M.D.Napa, CA1851336218
  6. Carolyn AbbasiLoma Linda, CA1811287311
  7. Christine Abboud, D.O.Walnut Creek, CA1174901508
  8. Steven Abboud, MDPalo Alto, CA1619364908
  9. Therese Abboud, M.D.Coronado, CA1003112913
  10. Mohammed Abdel Rahim, M.B.CH.BNewport Beach, CA1255520854

Common questions

What is Robin Marcellus Dennings, M.D.'s NPI number?

Robin Marcellus Dennings, M.D.'s National Provider Identifier (NPI) is 1649265349, issued on Sep 19, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Robin Marcellus Dennings, M.D. located?

The NPPES record lists a practice address at 200 Porter Dr, San Ramon, CA, 94583. Phone: (925) 838-6880. Providers update this record themselves, so call before visiting.

How can I verify Robin Marcellus Dennings, M.D.'s license?

NPPES lists California license number G79204, 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.

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.