Maryann Walthier, M.D.
NPI 1619160207 · Family Medicine Physician · Garden Grove, CA
Maryann Walthier, M.D. is a Family Medicine Physician provider in Garden Grove, CA (NPI 1619160207).
Provider details
- NPI number
- 1619160207
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A42004 (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
18 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
- 2007-08-27
- Last updated
- 2007-08-27
Frequently asked questions
- What is Maryann Walthier's NPI number?
- Maryann Walthier's National Provider Identifier (NPI) is 1619160207, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maryann Walthier's specialty?
- Maryann Walthier is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maryann Walthier located?
- Maryann Walthier's practice location on file with NPPES is 6292 Amy Ave, Garden Grove, CA 92845-1808.
- What is Maryann Walthier's phone number?
- The practice phone number listed in the NPPES registry for Maryann Walthier is (714) 895-2189.
- Is Maryann Walthier's NPI active?
- Yes — Maryann Walthier's NPI (1619160207) is active in the NPPES registry as of the last update on 2007-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.