Andrew K. Chinnock, FNP
Nurse Practitioner · Petaluma, CA
Andrew K. Chinnock, FNP is a nurse practitioner with a practice address in Petaluma, California, and NPI 1174844674, issued on Jun 18, 2010. Check the license (California 18998, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Andrew K. Chinnock
- Credential
- FNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 18998 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 N Mcdowell Blvd, Petaluma, CA 94954
- Phone
- (707) 776-8066
- Enumerated
- Jun 18, 2010
- Record last updated
- Jun 18, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100908000285); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 400 N Mcdowell Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Andrew K. Chinnock in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 18998Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average nurse practitioner in 2024
2,403 Medicare Part D claims for 157 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 37 claims were for opioids.
Most prescribed
- Atorvastatin Calcium220 claims
- Lisinopril185 claims
- Amlodipine Besylate140 claims
- Levothyroxine Sodium112 claims
- Losartan Potassium94 claims
- Metformin Hcl73 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 78.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Adventist Health Clearlake Hospital Inc.Clearlake, CA
- Adventist Health Physicians NetworkNapa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew K. Chinnock among 8,223 nurse practitioner records in California
Andrew K. Chinnock, FNP is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 32% of them.
- NPI issued2010 · 32% of these records are older, 66% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2009 · median 2017 among the 3,425 with a school on file
- Record last updated2010 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nurse Practitioner providers in California
There are 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in Petaluma → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Lisa Carlson, RNPetaluma, CA 949541972458081
- Joanna Diel-Martin, NPPetaluma, CA 949541932759461
- Patricia Grinnell, NPPetaluma, CA 949541538186457
- Colette Long, NPPetaluma, CA 949541588214019
- Lynne Palma, ARNPPetaluma, CA 949541306285697
- Sean Upton, RNPetaluma, CA 949541205162450
- Kathryn BryantPetaluma, CA 949521811397177
- Halle Ostman, RNPoint Reyes Station, CA 949561275345449
Common questions
What is Andrew K. Chinnock, FNP's NPI number?
Andrew K. Chinnock, FNP's National Provider Identifier (NPI) is 1174844674, issued on Jun 18, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Andrew K. Chinnock, FNP located?
The NPPES record lists a practice address at 400 N Mcdowell Blvd, Petaluma, CA, 94954. Phone: (707) 776-8066. Providers update this record themselves, so call before visiting.
How can I verify Andrew K. Chinnock, FNP's license?
NPPES lists California license number 18998, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Andrew K. Chinnock, FNP prescribe under Medicare Part D?
In 2024, Andrew K. Chinnock, FNP had 2,403 Medicare Part D claims for 157 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Andrew K. Chinnock, FNP's MIPS final score?
The 2023 MIPS final score is 78.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.