Mark Flavius Donaldson, M.D.
Internal Medicine Physician · San Luis Obispo, CA
Mark Flavius Donaldson, M.D. is an internal medicine physician with a practice address in San Luis Obispo, California, and NPI 1710923933, issued on Jun 22, 2006. Check the license (California C41496, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark Flavius Donaldson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- C41496 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1288 Morro St, San Luis Obispo, CA 93401
- Phone
- (805) 543-1233
- Enumerated
- Jun 22, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (805) 547-1179
- Entity
- Type 1 · individual
Also registered at 1288 Morro St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Carol Fuentes, MS PA-CMedical Physician Assistant1619918570
- Ryan Lubock, PSYDPsychologist1720534217
- Wilma Mechsner, NPFamily Nurse Practitioner1497786388
- Surya-Rao Pakalapati, MDInternal Medicine Physician1699707752
- Katherine Stevens, RN,BSNRegistered Nurse1114254307
Verify Mark Flavius Donaldson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C41496Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41 internal medicine physician records list a practice address in San Luis Obispo
They are 41 of the 3,403 NPPES records with a practice address in San Luis Obispo, 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 41 in San Luis Obispo → All 17,696 in California → Every provider in San Luis Obispo →
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- 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 Mark Flavius Donaldson, M.D.'s NPI number?
Mark Flavius Donaldson, M.D.'s National Provider Identifier (NPI) is 1710923933, issued on Jun 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Flavius Donaldson, M.D. located?
The NPPES record lists a practice address at 1288 Morro St, San Luis Obispo, CA, 93401. Phone: (805) 543-1233. Providers update this record themselves, so call before visiting.
How can I verify Mark Flavius Donaldson, M.D.'s license?
NPPES lists California license number C41496, 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.