NPPES file of Aug 9, 2026

Marcus Ottochian, M.D.

Critical Care Medicine (Internal Medicine) Physician · Duarte, CA

Marcus Ottochian, M.D. is a critical care medicine (internal medicine) physician with a practice address in Duarte, California, and NPI 1952614307, issued on Jul 14, 2010. Check the license (California A113211, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1952614307
Name
Marcus Ottochian
Credential
M.D.
Primary taxonomy
Critical Care Medicine (Internal Medicine) Physician 207RC0200X
License number
A113211 CA
Self-reported in NPPES; status is on the state search
Practice location
1500 Duarte RD, Duarte, CA 91010
Phone
(626) 256-4673
Enumerated
Jul 14, 2010
Record last updated
May 1, 2023
Medicare enrollment
Enrolled (PECOS I20170512001128); accepts Medicare assignment
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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8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →

Also registered at 1500 Duarte RD

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

  1. Chelsea Abad, CRNP, AGPCNP - BCGerontology Nurse Practitioner1952848137
  2. Wajidah Abdul-KhabirHospitalist Physician1215323522
  3. Farah Abdulla, MDDermatology Physician1093934390
  4. Megan Abel, PA-CPhysician Assistant1104100619
  5. Michelle Afkhami, M.D.Hematology (Pathology) Physician1326230228
  6. Vaibhav Agrawal, M.D.Hematology & Oncology Physician1538402565

Verify Marcus Ottochian in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A113211    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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Bills Medicare through 2 group practices

  1. Cep America - Intensivists PCLong Beach, CA
  2. Prohealth Partners, A Medical GroupLynwood, CA

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

Marcus Ottochian among 723 critical care medicine (internal medicine) physician records in California

Marcus Ottochian, M.D. is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 64% of them.

  • NPI issued2010 · 64% of these records are older, 32% newer
  • In a Medicare fileYes · 87% of these records are
  • In the CMS Doctors and Clinicians fileYes · 77% of these records are
  • Graduated1998 · median 2005 among the 559 with a school on file
  • Record last updated2023 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Critical Care Medicine (Internal Medicine) Physician providers in California

There are 723 critical care medicine (internal medicine) physician records in California.

All 723 in California → Every provider in Duarte → Critical Care Medicine (Internal Medicine) Physician nationwide →

The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes

  1. Twinkle ChandakDuarte, CA 910101790003929
  2. Sanford Church, M.D.Duarte, CA 910101104219773
  3. Hugh Davis, M.D.Duarte, CA 910101174850622
  4. Mordecai Dunst, MDDuarte, CA 910101376649889
  5. Aria Hong, M.D.Duarte, CA 910101396011557
  6. David Horak, MDDuarte, CA 910101972601755
  7. Sonal Khemani, M.D.Duarte, CA 910101457595506
  8. Anna Kim, MDDuarte, CA 910101508951377

Common questions

What is Marcus Ottochian, M.D.'s NPI number?

Marcus Ottochian, M.D.'s National Provider Identifier (NPI) is 1952614307, issued on Jul 14, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Marcus Ottochian, M.D. located?

The NPPES record lists a practice address at 1500 Duarte RD, Duarte, CA, 91010. Phone: (626) 256-4673. Providers update this record themselves, so call before visiting.

How can I verify Marcus Ottochian, M.D.'s license?

NPPES lists California license number A113211, 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.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.