Immanuel Asuncion, M.D.
Family Medicine Physician · San Pablo, CA
Immanuel Asuncion, M.D. is a family medicine physician with a practice address in San Pablo, California, and NPI 1245254580, issued on Jul 27, 2006. Check the license (California A89792, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Immanuel Asuncion
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A89792 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2101 Vale RD Ste 201, San Pablo, CA 94806
- Phone
- (510) 233-9140
- Enumerated
- Jul 27, 2006
- Entity
- Type 1 · individual
Also registered at 2101 Vale RD Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matthew Auyoung, M.D.Student in an Organized Health Care Education/Training Program1053707190
- William Hindle-Katel, M.D.Student in an Organized Health Care Education/Training Program1376955773
- Ramon Lee, MDInternal Medicine Physician1215496427
- Jason Owyang, NP-CFamily Nurse Practitioner1972928059
- Melanie Perez, FNPRegistered Nurse1760742225
Verify Immanuel Asuncion in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A89792Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
33% more Medicare Part D claims than the average family medicine physician in 2024
4,668 Medicare Part D claims for 399 beneficiaries, against an average of 3,519 among the 111,126 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium611 claims
- Metformin Hcl257 claims
- Losartan Potassium243 claims
- Lisinopril232 claims
- Amlodipine Besylate178 claims
- Rosuvastatin Calcium177 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: $908.93
40 payments, mostly food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 53,013 providers of this specialty with any payment received $861.30 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
- John Muir Physician NetworkSan Pablo, 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.
16 family medicine physician records list a San Pablo practice address
They are 16 of the 517 NPPES records with a San Pablo practice address, and 16,272 family medicine physician records in California.
All 16 in San Pablo → All 16,272 in California → Every provider in San Pablo →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Immanuel Asuncion, M.D.'s NPI number?
Immanuel Asuncion, M.D.'s National Provider Identifier (NPI) is 1245254580, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Immanuel Asuncion, M.D. located?
The NPPES record lists a practice address at 2101 Vale RD Ste 201, San Pablo, CA, 94806. Phone: (510) 233-9140. Providers update this record themselves, so call before visiting.
How can I verify Immanuel Asuncion, M.D.'s license?
NPPES lists California license number A89792, 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 Immanuel Asuncion, M.D. prescribe under Medicare Part D?
In 2024, Immanuel Asuncion, M.D. had 4,668 Medicare Part D claims for 399 beneficiaries; the average among family medicine physician prescribers was 3,519. 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.