DR. KEITH GREGORY HEINZERLING MD
NPI 1184724932
Internal Medicine - Addiction Medicine in Santa Monica, CA

Q: What is Keith Heinzerling's NPI number?

The NPI number for Keith Heinzerling is 1184724932. It was assigned to this individual provider in the NPPES registry on September 22, 2006.

Q: What is Keith Heinzerling's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Addiction Medicine, with taxonomy code 207RA0401X.

Q: When was this NPI record last updated?

The NPPES record for Keith Heinzerling was last updated on April 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 22, 2006PECOS Enrolled

1301 20TH ST STE 540, SANTA MONICA, CA 90404(310) 582-7612(424) 277-6342 Get Directions Write a Review

NPPES record last updated: April 13, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 13, 2021, Aug 28, 2020 (2 updates tracked since 2020).

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About Dr. Keith Gregory Heinzerling Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KEITH GREGORY HEINZERLING MD (NPI 1184724932) is an individual addiction medicine provider in Santa Monica, California, licensed in California (A79201) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Santa Monica.

NPPES Registry Identity

NPI1184724932

Entity TypeIndividualMale

Primary Taxonomy207RA0401X

Provider Legal NameDR. KEITH GREGORY HEINZERLINGCredential: MD

Location Address1301 20TH ST STE 540Santa Monica, CA 90404-2118

Mailing Address1920 Colorado AveSanta Monica, CA 90404-3414 · (310) 319-4700 · Fax (310) 393-5659

Phone(310) 582-7612

Fax(424) 277-6342

Sole ProprietorNo

Enumeration DateSeptember 22, 2006

Last NPPES UpdateApril 13, 20212 updates tracked since enumeration

NPPES CertifiedApril 13, 2021

✔ NPI 1184724932 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Addiction MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RA0401X

License✔ Licensed in CA · A79201

Definition

An internist doctor of osteopathy that specializes in the treatment of addiction disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Added Qualifications in the field of Addiction Medicine.

Also ListedInternal MedicineTaxonomy 207R00000X · License A79201 (CA)

1301 20TH ST STE 540, Santa Monica, CA 90404

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Secondary Practice Location 1

Location 11920 Colorado AveSanta Monica, CA 90404-3414 · Phone (310) 319-4700 · Fax (310) 393-5659

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Keith Gregory Heinzerling Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Keith Heinzerling reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Providence Saint Johns Medical Foundation

0.1 mi

Specialist

2121 SANTA MONICA BLVD
Santa Monica, CA 90404

Reassigned Medicare billing, California enrollment
461 clinicians in this Medicare group

NPI 1770093734 (310) 582-7312

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

92 services22 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

51 services23 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

17 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90404 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. SHANTHI GOWRINATHAN M.D.

Psychiatry & Neurology (Psychosomatic Medicine)

1301 20TH ST STE 540
SANTA MONICA, CA 90404

Los Angeles County (310) 582-7641

JULIANA NICOLE HUDSON ASW

Social Worker (Clinical)

1301 20TH ST STE 540
SANTA MONICA, CA 90404

Los Angeles County (310) 582-7612

DR. MICAH LINTON PSY.D.

Psychologist (Clinical)

1301 20TH ST STE 540
SANTA MONICA, CA 90404

Los Angeles County (310) 582-7612

KARINA SERGI M.S.

Marriage & Family Therapist

1301 20TH ST STE 540
SANTA MONICA, CA 90404

Los Angeles County (310) 582-7612

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Keith Heinzerling's NPI number?

The NPI number for Keith Heinzerling is 1184724932. It was assigned to this individual provider in the NPPES registry on September 22, 2006.

Where is Keith Heinzerling located?

Keith Heinzerling practices at 1301 20th St Ste 540, Santa Monica, CA 90404. The listed phone number is (310) 582-7612.

What is Keith Heinzerling's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Addiction Medicine, with taxonomy code 207RA0401X.

Is Keith Heinzerling enrolled in Medicare?

Yes. Keith Heinzerling is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Keith Heinzerling's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Keith Heinzerling reassigns Medicare benefits to Providence Saint Johns Medical Foundation (Santa Monica, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Keith Heinzerling's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Keith Heinzerling was last updated on April 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.