Mary Caroline Yager, MD
Hospitalist Physician · San Diego, CA
Mary Caroline Yager, MD is a hospitalist physician with a practice address in San Diego, California, and NPI 1801059902, issued on Jul 8, 2008. Check the license (California A103221, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mary Caroline Yager
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A103221 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 W Arbor Dr, San Diego, CA 92103
- Phone
- (858) 249-6748
- Enumerated
- Jul 8, 2008
- Record last updated
- Jul 21, 2022
- Medicare enrollment
- Enrolled (PECOS I20121214000432); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 200 W Arbor Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alison A'Court, MDAnesthesiology Physician1912218199
- Benjamin Abbadessa, M.D.Colon & Rectal Surgery Physician1255593612
- Geraldine Abcede, RNCertified Registered Nurse Anesthetist1982384046
- Joseph Abdelmalek, M.DNephrology Physician1740485531
- Kristy AbelCertified Registered Nurse Anesthetist1962113035
- Paula Abeleda, NPFamily Nurse Practitioner1558945022
Verify Mary Caroline Yager in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A103221Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Northwest Hbp Medical Services LLCSahuarita, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Caroline Yager among 3,099 hospitalist physician records in California
Mary Caroline Yager, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 34% of them.
- NPI issued2008 · 34% of these records are older, 61% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2000 · median 2010 among the 2,505 with a school on file
- Record last updated2022 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in San Diego → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Ali Amirrezvani, M.D.San Diego, CA 921031861485005
- William Anapoell, MDSan Diego, CA 921031982631289
- Deepak Asudani, M.D.San Diego, CA 921031548208812
- Atousa Brandish, M.D.San Diego, CA 921031609814235
- Michael Hogarth, M.D.San Diego, CA 921031225019193
- Matthew Hom, M.D.San Diego, CA 921031881632081
- Bryan Huang, M.D.San Diego, CA 921031881652394
- Ian Jenkins, M.D.San Diego, CA 921031992762520
Common questions
What is Mary Caroline Yager, MD's NPI number?
Mary Caroline Yager, MD's National Provider Identifier (NPI) is 1801059902, issued on Jul 8, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Mary Caroline Yager, MD located?
The NPPES record lists a practice address at 200 W Arbor Dr, San Diego, CA, 92103. Phone: (858) 249-6748. Providers update this record themselves, so call before visiting.
How can I verify Mary Caroline Yager, MD's license?
NPPES lists California license number A103221, 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.