OrganizationActive
Richard A. Zak, Md,inc
NPI 1821316944 · Gastroenterology Physician · Chico, CA
Richard A. Zak, Md,inc is a Gastroenterology Physician organization in Chico, CA (NPI 1821316944).
Provider details
- NPI number
- 1821316944
- Entity type
- Organization
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Lorraine Fingleton, Office Manager(530) 894-8800
- License
- G43123 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(83/100 index)
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
251 Cohasset Rd
Suite 300
Chico, CA 95926-2241
Phone: (530) 894-8800
Approximate (ZIP-level) locationGet directions
Mailing address
Po Box 1096
Mansfield, OH 44901-1096
Registry dates
- Enumerated
- 2010-05-13
- Last updated
- 2011-06-28
Frequently asked questions
- What is Richard A. Zak, Md,inc's NPI number?
- Richard A. Zak, Md,inc's National Provider Identifier (NPI) is 1821316944, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Richard A. Zak, Md,inc?
- Richard A. Zak, Md,inc is classified in the NPPES registry as Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Richard A. Zak, Md,inc located?
- Richard A. Zak, Md,inc's practice location on file with NPPES is 251 Cohasset Rd, Chico, CA 95926-2241.
- What is Richard A. Zak, Md,inc's phone number?
- The practice phone number listed in the NPPES registry for Richard A. Zak, Md,inc is (530) 894-8800.
- Who is the authorized official for Richard A. Zak, Md,inc?
- The authorized official listed on Richard A. Zak, Md,inc's NPPES record is Lorraine Fingleton, Office Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Richard A. Zak, Md,inc's NPI active?
- Yes — Richard A. Zak, Md,inc's NPI (1821316944) is active in the NPPES registry as of the last update on 2011-06-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.