NPPES file of Aug 9, 2026

Elsa Maria Hartwick, M.D.

Internal Medicine Physician · Los Angeles, CA

Elsa Maria Hartwick, M.D. is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1558375022, issued on Jul 28, 2006. Check the license (California A065743, 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
1558375022
Name
Elsa Maria Hartwick
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
A065743 CA
A65743 CA
Self-reported in NPPES; status is on the state search
Practice location
1414 S Grand Ave Ste 380, Los Angeles, CA 90015
Phone
(213) 222-1300
Enumerated
Jul 28, 2006
Record last updated
Sep 12, 2025
Fax
(213) 222-1333
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1414 S Grand Ave Ste 380

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

  1. Kami Adibi, M.D.Family Medicine Physician1548211436
  2. Yazmin Arestegui, FNPNurse Practitioner1770431637
  3. Nolasco Cristobal, M.DPediatrics Physician1609818152
  4. Natalie Houser, PA-CPhysician Assistant1033524442
  5. Gaila Kenneally, DOFamily Medicine Physician1700831468
  6. Elizabeth LeePhysician Assistant1649904442

Verify Elsa Maria Hartwick in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A065743
    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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2.7 times the Medicare Part D claims of the average internal medicine physician in 2024

8,533 Medicare Part D claims for 565 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 15 claims were for opioids.

  1. Elsa Hartwick8,533
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium726 claims
  2. Amlodipine Besylate435 claims
  3. Metformin Hcl425 claims
  4. Losartan Potassium295 claims
  5. Lisinopril283 claims
  6. Jardiance279 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.

Elsa Maria Hartwick among 17,696 internal medicine physician records in California

Elsa Maria Hartwick, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.

  • NPI issued2006 · 5% of these records are older, 56% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 63% of these records are
  • Record last updated2025 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,423 internal medicine physician records list a practice address in Los Angeles

They are 1,423 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Amos Acoff, M.D.Los Angeles, CA 900151386687051
  2. Pouya Bahrami, DOLos Angeles, CA 900151871526301
  3. Robert Blackman, MDLos Angeles, CA 900151245203082
  4. Jesus Carlos, M.D.Los Angeles, CA 900151609954155
  5. Blanca Fajardo, MDLos Angeles, CA 900151700998804
  6. Albert Fite, M.D.Los Angeles, CA 900151326052218
  7. Jeffrey Harris, MDLos Angeles, CA 900151326038647
  8. Payam Shabanzadeh, M.DLos Angeles, CA 900151912975350

Common questions

What is Elsa Maria Hartwick, M.D.'s NPI number?

Elsa Maria Hartwick, M.D.'s National Provider Identifier (NPI) is 1558375022, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Elsa Maria Hartwick, M.D. located?

The NPPES record lists a practice address at 1414 S Grand Ave Ste 380, Los Angeles, CA, 90015. Phone: (213) 222-1300. Providers update this record themselves, so call before visiting.

How can I verify Elsa Maria Hartwick, M.D.'s license?

NPPES lists California license number A065743, 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 Elsa Maria Hartwick, M.D. prescribe under Medicare Part D?

In 2024, Elsa Maria Hartwick, M.D. had 8,533 Medicare Part D claims for 565 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.