Mary L. Garren, M.D.
Gastroenterology Physician · Monterey, CA
Mary L. Garren, M.D. is a gastroenterology physician with a practice address in Monterey, California, and NPI 1801806567, issued on Aug 8, 2006. Check the license (California G81025, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mary L. Garren
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G81025 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23 Upper Ragsdale Dr, Monterey, CA 93940
- Phone
- (831) 375-3577
- Enumerated
- Aug 8, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (831) 375-1478
- Entity
- Type 1 · individual
Also registered at 23 Upper Ragsdale Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Di Sario, M.D.Gastroenterology Physician1376553180
- Megan Fulton, CRNACertified Registered Nurse Anesthetist1457983801
- Lloyd Garren, M.D.Gastroenterology Physician1841200565
- Silvia Giachetti, NPFamily Nurse Practitioner1427586189
- Richard Hell, M.D.Gastroenterology Physician1114937927
- Toby Katz, M.D.Gastroenterology Physician1336159052
Verify Mary L. Garren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G81025Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other gastroenterology physician records in California
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- Sadeea Abbasi, M.D., PH.D.Los Angeles, CA1366713513
- Basim Abdelkarim, MDUpland, CA1932217544
- Homan Abdollahzadeh, MDPalm Springs, CA1184634826
- John Abdulian, M.D.Fresno, CA1437114113
- Hussein Abidali, DORancho Cucamonga, CA1205274768
- Alaa Abousaif, MDOrange, CA1235124108
- Donald Abrahm, M.D.Newport Beach, CA1215022405
- Maria Abreu, M.D.West Hollywood, CA1598793374
Common questions
What is Mary L. Garren, M.D.'s NPI number?
Mary L. Garren, M.D.'s National Provider Identifier (NPI) is 1801806567, issued on Aug 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary L. Garren, M.D. located?
The NPPES record lists a practice address at 23 Upper Ragsdale Dr, Monterey, CA, 93940. Phone: (831) 375-3577. Providers update this record themselves, so call before visiting.
How can I verify Mary L. Garren, M.D.'s license?
NPPES lists California license number G81025, 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.