John a Crockett MD a Professional Corporation
NPI 1265758460 · Family Medicine Physician · Walnut Creek, CA
John a Crockett MD a Professional Corporation is a Family Medicine Physician organization in Walnut Creek, CA (NPI 1265758460).
Provider details
- NPI number
- 1265758460
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Karl Stemmler, Credentialer(619) 258-6200
- License
- G230620 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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
Other names (DBA / former)
- Doing business as
- John a Crockett MD, a Professional Corporation
Registry dates
- Enumerated
- 2010-04-13
- Last updated
- 2022-12-22
- Certified
- 2022-12-22
Frequently asked questions
- What is John a Crockett MD a Professional Corporation's NPI number?
- John a Crockett MD a Professional Corporation's National Provider Identifier (NPI) is 1265758460, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John a Crockett MD a Professional Corporation?
- John a Crockett MD a Professional Corporation is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John a Crockett MD a Professional Corporation located?
- John a Crockett MD a Professional Corporation's practice location on file with NPPES is 240 La Casa Via Ste 100, Walnut Creek, CA 94598-4863.
- What is John a Crockett MD a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for John a Crockett MD a Professional Corporation is (925) 519-2866.
- Who is the authorized official for John a Crockett MD a Professional Corporation?
- The authorized official listed on John a Crockett MD a Professional Corporation's NPPES record is Karl Stemmler, Credentialer. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John a Crockett MD a Professional Corporation's NPI active?
- Yes — John a Crockett MD a Professional Corporation's NPI (1265758460) is active in the NPPES registry as of the last update on 2022-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.