Arianna Maria Katharina Heyer, MD, MPH
Internal Medicine Physician · San Diego, CA
Arianna Maria Katharina Heyer, MD, MPH is an internal medicine physician with a practice address in San Diego, California, and NPI 1891371241, issued on Mar 23, 2021. Check the license (California A200882, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Arianna Maria Katharina Heyer
- Credential
- MD, MPH
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A200882 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10455 Sorrento Valley RD, San Diego, CA 92121
- Phone
- (585) 552-7475
- Enumerated
- Mar 23, 2021
- Record last updated
- Jun 11, 2025
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 10455 Sorrento Valley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Arianna Maria Katharina Heyer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A200882Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Arianna Maria Katharina Heyer among 17,696 internal medicine physician records in California
Arianna Maria Katharina Heyer, MD, MPH is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileNo · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
961 internal medicine physician records list a practice address in San Diego
They are 961 of the 52,937 NPPES records with a practice address in San Diego, and 17,696 internal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 17,696 in California → Every provider in San Diego → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Steve Chen, MDSan Diego, CA 921211457385759
- Sandra Coufal, M.D.San Diego, CA 921211629285408
- Charmaine Gutjahr, MDSan Diego, CA 921211396949665
- Neil Hirschenbein, M.D.,PHDSan Diego, CA 921211457570889
- Anil Keswani, MDSan Diego, CA 921211952320301
- Tadd Lazarus, M.D.San Diego, CA 921211801919832
- Robert Morehead, MDSan Diego, CA 921211801069513
- Eric Pan, M.D.San Diego, CA 921211285820142
Common questions
What is Arianna Maria Katharina Heyer, MD, MPH's NPI number?
Arianna Maria Katharina Heyer, MD, MPH's National Provider Identifier (NPI) is 1891371241, issued on Mar 23, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Arianna Maria Katharina Heyer, MD, MPH located?
The NPPES record lists a practice address at 10455 Sorrento Valley RD, San Diego, CA, 92121. Phone: (585) 552-7475. Providers update this record themselves, so call before visiting.
How can I verify Arianna Maria Katharina Heyer, MD, MPH's license?
NPPES lists California license number A200882, 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. 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.