Mary Garren, M.D.
NPI 1801806567 · Gastroenterology Physician · Monterey, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Garren, M.D. is a Gastroenterology Physician provider in Monterey, CA (NPI 1801806567).
Provider details
- NPI number
- 1801806567
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- G81025 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-08
- Last updated
- 2007-07-09
Frequently asked questions
- What is Mary Garren's NPI number?
- Mary Garren's National Provider Identifier (NPI) is 1801806567, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Garren's specialty?
- Mary Garren is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Garren located?
- Mary Garren's practice location on file with NPPES is 23 Upper Ragsdale Dr, Monterey, CA 93940-5771.
- What is Mary Garren's phone number?
- The practice phone number listed in the NPPES registry for Mary Garren is (831) 375-3577.
- Does Mary Garren accept Medicare?
- Mary Garren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Garren's NPI active?
- Yes — Mary Garren's NPI (1801806567) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.