NPPES file of Aug 9, 2026

Douglas Eugene Hanlin, M.D.

Psychiatry Physician · Concord, CA

Douglas Eugene Hanlin, M.D. is a psychiatry physician with a practice address in Concord, California, and NPI 1447342902, issued on Sep 29, 2006. Check the license (California G86099, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1447342902
Name
Douglas Eugene Hanlin
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
G86099 CA
Self-reported in NPPES; status is on the state search
Practice location
1420 Willow Pass RD, Concord, CA 94520
Phone
(925) 646-5482
Enumerated
Sep 29, 2006
Record last updated
May 9, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20110715000240); accepts Medicare assignment
Medical or professional school
Medical College Of Ohio, 1982
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1420 Willow Pass RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. John AllenMarriage & Family Therapist1225183643
  2. Leticia Ballesteros, RNAdult Psychiatric/Mental Health Registered Nurse1912051442
  3. Cheryl Berriman, RNAdult Psychiatric/Mental Health Registered Nurse1568516003
  4. Elma BesirovicRehabilitation Practitioner1427812627
  5. Jeffrey BockserMental Health Counselor1285788299
  6. Candelario Castillo, LCSWClinical Social Worker1730540782

Verify Douglas Eugene Hanlin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G86099
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.3 times the Medicare Part D claims of the average psychiatry physician in 2024

2,340 Medicare Part D claims for 181 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.

  1. Douglas Hanlin2,340
  2. Specialty average1,000

Most prescribed

  1. Clonazepam200 claims
  2. Olanzapine147 claims
  3. Quetiapine Fumarate105 claims
  4. Buspirone Hcl94 claims
  5. Invega Sustenna83 claims
  6. Lorazepam79 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: $27.27

1 payment: education; the largest payer was E.R. Squibb & Sons, L.L.C. 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.

  1. Douglas Hanlin$27.27
  2. Specialty average$4,954.93

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

  1. Contra Costa CountyConcord, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Douglas Eugene Hanlin among 8,673 psychiatry physician records in California

Douglas Eugene Hanlin, M.D. 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 2006, is newer than 2% of them.

  • NPI issued2006 · 2% of these records are older, 67% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 38% of these records are
  • Graduated1982 · median 2005 among the 3,295 with a school on file
  • Record last updated2015 · 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).

Psychiatry Physician providers in California

There are 8,673 psychiatry physician records in California.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Marie Champlin, D.O.Concord, CA 945201164718276
  2. Arman Danielyan, MDConcord, CA 945201306035050
  3. Daniel Forkin, M.D.Concord, CA 945201639320674
  4. Jee Guss, MDConcord, CA 945201932265600
  5. Ajani Jackson, MDConcord, CA 945201740411214
  6. Shahbaz KhanConcord, CA 945201619048295
  7. Jessica Lee, M.D., MPHConcord, CA 945201265693485
  8. Sunita Mall, MDConcord, CA 945201548473218

Common questions

What is Douglas Eugene Hanlin, M.D.'s NPI number?

Douglas Eugene Hanlin, M.D.'s National Provider Identifier (NPI) is 1447342902, issued on Sep 29, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Douglas Eugene Hanlin, M.D. located?

The NPPES record lists a practice address at 1420 Willow Pass RD, Concord, CA, 94520. Phone: (925) 646-5482. Providers update this record themselves, so call before visiting.

How can I verify Douglas Eugene Hanlin, M.D.'s license?

NPPES lists California license number G86099, 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 Douglas Eugene Hanlin, M.D. prescribe under Medicare Part D?

In 2024, Douglas Eugene Hanlin, M.D. had 2,340 Medicare Part D claims for 181 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.