Joseph Andrew Cook, D.O.
Psychiatry Physician · Atascadero, CA
Joseph Andrew Cook, D.O. is a psychiatry physician with a practice address in Atascadero, California, and NPI 1114136850, issued on May 21, 2007. Check the license (California 20A9849, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joseph Andrew Cook
- Credential
- D.O.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- 20A9849 CA
DOSR-55 HI
Self-reported in NPPES; status is on the state search - Practice location
- 10333 EL Camino Real, Atascadero, CA 93422
- Phone
- (805) 468-2000
- Enumerated
- May 21, 2007
- Record last updated
- Sep 14, 2023
- Medicare enrollment
- Enrolled (PECOS I20220301000966); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 10333 EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Henry Ahlstrom, PH.D.Clinical Psychologist1619945870
- Moghees AhmedPsychiatry Physician1124333125
- Hossein Akhavan, M.D.Internal Medicine Physician1871779942
- Paula Aloi, PSYDClinical Psychologist1306134630
Verify Joseph Andrew Cook in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A9849Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average psychiatry physician in 2024
742 Medicare Part D claims for 33 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Escitalopram Oxalate81 claims
- Olanzapine78 claims
- Quetiapine Fumarate44 claims
- Benztropine Mesylate43 claims
- Clozapine42 claims
- Trazodone Hcl41 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.
Industry payments in 2024: $130.00
1 payment: food and beverage; the largest payer was Alkermes, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- County OF TulareVisalia, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph Andrew Cook among 8,673 psychiatry physician records in California
Joseph Andrew Cook, D.O. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2004 · median 2005 among the 3,295 with a school on file
- Record last updated2023 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
54 psychiatry physician records list a practice address in Atascadero
They are 54 of the 992 NPPES records with a practice address in Atascadero, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Atascadero → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Dugald Chisholm, M.D.Atascadero, CA 934221366472599
- Eric Cohen, MDAtascadero, CA 934221376517391
- David Emelity, MDAtascadero, CA 934221558396291
- Jonathan Funk, M.D.Atascadero, CA 934221083679500
- Sonya Jackson, M.D.Atascadero, CA 934221841275336
- Robin Johnson, M.D.Atascadero, CA 934221821060617
- Marina Marchak, MDAtascadero, CA 934221386684124
- Bella Prestoza, M.DAtascadero, CA 934221871685123
Common questions
What is Joseph Andrew Cook, D.O.'s NPI number?
Joseph Andrew Cook, D.O.'s National Provider Identifier (NPI) is 1114136850, issued on May 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Andrew Cook, D.O. located?
The NPPES record lists a practice address at 10333 EL Camino Real, Atascadero, CA, 93422. Phone: (805) 468-2000. Providers update this record themselves, so call before visiting.
How can I verify Joseph Andrew Cook, D.O.'s license?
NPPES lists California license number 20A9849, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joseph Andrew Cook, D.O. prescribe under Medicare Part D?
In 2024, Joseph Andrew Cook, D.O. had 742 Medicare Part D claims for 33 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
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.