Ryann Marie Ahern, M.D.
Internal Medicine Physician · Anaheim, CA
Ryann Marie Ahern, M.D. is an internal medicine physician with a practice address in Anaheim, California, and NPI 1306149166, issued on Dec 15, 2010. Check the license (California A114908, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ryann Marie Ahern
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A114908 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1188 N Euclid St, Anaheim, CA 92801
- Phone
- (888) 988-2800
- Enumerated
- Dec 15, 2010
- Record last updated
- Feb 10, 2022
- Medicare enrollment
- Enrolled (PECOS I20111220000445); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1188 N Euclid St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Syed Ahmed, PHARMDPharmacist1780478875
- Eileen Arcebal, M.A., CCC-SLPSpeech-Language Pathologist1295855641
- Amalia Arizpe-Fernandez, LMFTProfessional Counselor1205033792
- Daniel Arvesen, M.A., LMFTMarriage & Family Therapist1659433860
- Gina Bodnar, M.S.Marriage & Family Therapist1558553669
- Elizabeth Canepa, M.D.Psychiatry Physician1053494476
Verify Ryann Marie Ahern in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A114908Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
14 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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
- Southern California Permanente Medical GroupAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
189 internal medicine physician records list a practice address in Anaheim
They are 189 of the 9,018 NPPES records with a practice address in Anaheim, and 17,696 internal medicine physician records in California.
All 189 in Anaheim → All 17,696 in California → Every provider in Anaheim →
Other internal medicine physician records in California
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- 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 Ryann Marie Ahern, M.D.'s NPI number?
Ryann Marie Ahern, M.D.'s National Provider Identifier (NPI) is 1306149166, issued on Dec 15, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Ryann Marie Ahern, M.D. located?
The NPPES record lists a practice address at 1188 N Euclid St, Anaheim, CA, 92801. Phone: (888) 988-2800. Providers update this record themselves, so call before visiting.
How can I verify Ryann Marie Ahern, M.D.'s license?
NPPES lists California license number A114908, 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 Ryann Marie Ahern, M.D. prescribe under Medicare Part D?
In 2024, Ryann Marie Ahern, M.D. had 14 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.