Keith Gregory Heinzerling, MD
Addiction Medicine (Internal Medicine) Physician · Santa Monica, CA
Keith Gregory Heinzerling, MD is an addiction medicine (internal medicine) physician with a practice address in Santa Monica, California, and NPI 1184724932, issued on Sep 22, 2006. Check the license (California A79201, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Keith Gregory Heinzerling
- Credential
- MD
- Primary taxonomy
- Addiction Medicine (Internal Medicine) Physician 207RA0401X
- License number
- A79201 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1301 20TH St Ste 540, Santa Monica, CA 90404
- Phone
- (310) 582-7612
- Enumerated
- Sep 22, 2006
- Record last updated
- Apr 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (424) 277-6342
- Medicare enrollment
- Enrolled (PECOS I20050718000694); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest addiction medicine (internal medicine) physician records → All 73 in California → Look up another NPI →
Also registered at 1301 20TH St Ste 540
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shanthi Gowrinathan, M.D.Psychosomatic Medicine Physician1174892087
- Juliana Hudson, ASWClinical Social Worker1700429081
- Micah Linton, PSY.D.Clinical Psychologist1760942379
- Karina Sergi, M.S.Marriage & Family Therapist1952623514
Verify Keith Gregory Heinzerling in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A79201Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% fewer Medicare Part D claims than the average addiction medicine (internal medicine) physician in 2024
630 Medicare Part D claims for 61 beneficiaries, against an average of 829 among the 401 providers of this specialty who prescribed in Part D. 39 claims were for opioids.
Most prescribed
- Gabapentin54 claims
- Buprenorphine-Naloxone42 claims
- Clonazepam40 claims
- Diazepam34 claims
- Temazepam30 claims
- Hydrocodone-Acetaminophen28 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: $67.14
3 payments; by number, the most common kind was food and beverage; the largest payer was Indivior Inc. The 188 providers of this specialty with any payment received $1,761.64 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
- Providence Saint Johns Medical FoundationSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Keith Gregory Heinzerling among 73 addiction medicine (internal medicine) physician records in California
Keith Gregory Heinzerling, MD is one of 73 addiction medicine (internal medicine) physician records with a practice address in California. 75% 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 1% of them.
- NPI issued2006 · 1% of these records are older, 51% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated1998 · median 2008 among the 33 with a school on file
- Record last updated2021 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RA0401X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Addiction Medicine (Internal Medicine) Physician providers in California
There are 73 addiction medicine (internal medicine) physician records in California.
All 73 in California → Every provider in Santa Monica → Addiction Medicine (Internal Medicine) Physician nationwide →
The 8 addiction medicine (internal medicine) physician records with the nearest ZIP codes
- Farah Ahamed, DOTorrance, CA 905011164503330
- Courtney Scott, M.D.Inglewood, CA 903011699906750
- Barbara Bruton, M.D.Marina Del Rey, CA 902921730272527
- Ariella Morrow, MD, MPHMalibu, CA 902651437418803
- Craig Smith, M.D.Malibu, CA 902651023049483
- William Stanley, MDMalibu, CA 902651730128513
- Daniel Aronow, M.D.Culver City, CA 902321598878324
- Mark Honzel, M.D.Beverly Hills, CA 902111083761670
Common questions
What is Keith Gregory Heinzerling, MD's NPI number?
Keith Gregory Heinzerling, MD's National Provider Identifier (NPI) is 1184724932, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Keith Gregory Heinzerling, MD located?
The NPPES record lists a practice address at 1301 20TH St Ste 540, Santa Monica, CA, 90404. Phone: (310) 582-7612. Providers update this record themselves, so call before visiting.
How can I verify Keith Gregory Heinzerling, MD's license?
NPPES lists California license number A79201, 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 Keith Gregory Heinzerling, MD prescribe under Medicare Part D?
In 2024, Keith Gregory Heinzerling, MD had 630 Medicare Part D claims for 61 beneficiaries; the average among addiction medicine (internal medicine) physician prescribers was 829. 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.