Ann L. Bollay, MD
Hospitalist Physician · San Luis Obispo, CA
Ann L. Bollay, MD is a hospitalist physician with a practice address in San Luis Obispo, California, and NPI 1487610333, issued on Apr 20, 2006. Check the license (California G78858, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ann L. Bollay
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- G78858 CA
Self-reported in NPPES; status is on the state search - Practice location
- 77 Casa St Ste 201, San Luis Obispo, CA 93405
- Phone
- (805) 269-1566
- Enumerated
- Apr 20, 2006
- Record last updated
- Jul 17, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (805) 269-1594
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 77 Casa St Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susan CelliRegistered Dietitian1689347866
- Tina Heck, PA-CPhysician Assistant1003048620
- Kaishawn McDuffie, NPNurse Practitioner1720604481
- Jonas Morales, NPNurse Practitioner1801380605
Verify Ann L. Bollay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G78858Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% more Medicare Part D claims than the average hospitalist physician in 2024
619 Medicare Part D claims for 35 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims. 11 claims were for opioids.
Most prescribed
- Biktarvy77 claims
- Atorvastatin Calcium55 claims
- Dovato38 claims
- Tivicay31 claims
- Triumeq23 claims
- Ketoconazole22 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: $393.19
6 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 7,324 providers of this specialty with any payment received $494.84 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.
Ann L. Bollay among 3,099 hospitalist physician records in California
Ann L. Bollay, 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 73% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileNo · 81% of these records are
- Record last updated2020 · 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 Luis Obispo → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Ashlynn Gordon, D.O.San Luis Obispo, CA 934051255779641
- Olga Grigorieva Olson, M.D. PH.D.San Luis Obispo, CA 934051780046243
- Sarfaraz Mansuri, MDSan Luis Obispo, CA 934051508178088
- Gordon Ryan, MDSan Luis Obispo, CA 934051396824546
- Cindy Su, M.D.San Luis Obispo, CA 934051285088211
- Christopher Walheim, MDSan Luis Obispo, CA 934051326572116
- Julie Gelman, MDSan Luis Obispo, CA 934011962461046
- Justin Grammy, DOSan Luis Obispo, CA 934011003254483
Common questions
What is Ann L. Bollay, MD's NPI number?
Ann L. Bollay, MD's National Provider Identifier (NPI) is 1487610333, issued on Apr 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ann L. Bollay, MD located?
The NPPES record lists a practice address at 77 Casa St Ste 201, San Luis Obispo, CA, 93405. Phone: (805) 269-1566. Providers update this record themselves, so call before visiting.
How can I verify Ann L. Bollay, MD's license?
NPPES lists California license number G78858, 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 Ann L. Bollay, MD prescribe under Medicare Part D?
In 2024, Ann L. Bollay, MD had 619 Medicare Part D claims for 35 beneficiaries; the average among hospitalist physician prescribers was 521. 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.