NPPES file of Aug 9, 2026

Mark Fletcher Simonds, MD

Psychiatry Physician · Mission Hills, CA

Mark Fletcher Simonds, MD is a psychiatry physician with a practice address in Mission Hills, California, and NPI 1124244991, issued on Apr 18, 2007. Check the license (California A51692, 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
1124244991
Name
Mark Fletcher Simonds
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License numbers
A51692 CA
0101230975 VA
Self-reported in NPPES; status is on the state search
Practice location
11333 Sepulveda Blvd, Mission Hills, CA 91345
Phone
(818) 837-5780
Enumerated
Apr 18, 2007
Record last updated
Apr 2, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(818) 837-5609
Medicaid ID
00A516920 CA
Medicare enrollment
Enrolled (PECOS I20040804001470); accepts Medicare assignment
Medical or professional school
Vanderbilt University School Of Medicine, 1991
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 11333 Sepulveda Blvd

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

  1. Rafik Abdou, M.DInternal Medicine Physician1740594415
  2. Arin Abnoosian, M.D.Psychiatry Physician1255661658
  3. Lord Listowel Addo-Yirenkyi, MDHospitalist Physician1588140008
  4. Shanta Adhikari, NPFamily Nurse Practitioner1417453945
  5. Faraz Ali, M.D.Internal Medicine Physician1598170938
  6. Karine Aloyan, M.D.Internal Medicine Physician1548919673

Verify Mark Fletcher Simonds in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A51692
    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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34% fewer Medicare Part D claims than the average psychiatry physician in 2024

662 Medicare Part D claims for 187 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Mark Simonds662
  2. Specialty average1,000

Most prescribed

  1. Fluoxetine Hcl59 claims
  2. Bupropion Xl55 claims
  3. Alprazolam39 claims
  4. Trazodone Hcl36 claims
  5. Duloxetine Hcl35 claims
  6. Clonazepam29 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.

Bills Medicare through one group practice

  1. Mccd CA Psychiatry Services PCSan Francisco, CA

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

Mark Fletcher Simonds among 8,673 psychiatry physician records in California

Mark Fletcher Simonds, MD 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 2007, is newer than 33% of them.

  • NPI issued2007 · 33% of these records are older, 48% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 38% of these records are
  • Graduated1991 · median 2005 among the 3,295 with a school on file
  • Record last updated2014 · 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. Arin Abnoosian, M.D.Mission Hills, CA 913451255661658
  2. Megan Chiarelli, M.D.Mission Hills, CA 913451215256151
  3. Eric Foxman, MD.Mission Hills, CA 913451215941067
  4. Vidhya Meyyappa, MDMission Hills, CA 913451396364378
  5. Roaya Namdari, M.D.Mission Hills, CA 913451831551373
  6. Nisha Sheth, MDMission Hills, CA 913451912494519
  7. Mehera Halliwell, M.D.Granada Hills, CA 913441366579138
  8. Richard Jacobson, M,D,Granada Hills, CA 913441952443673

Common questions

What is Mark Fletcher Simonds, MD's NPI number?

Mark Fletcher Simonds, MD's National Provider Identifier (NPI) is 1124244991, issued on Apr 18, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mark Fletcher Simonds, MD located?

The NPPES record lists a practice address at 11333 Sepulveda Blvd, Mission Hills, CA, 91345. Phone: (818) 837-5780. Providers update this record themselves, so call before visiting.

How can I verify Mark Fletcher Simonds, MD's license?

NPPES lists California license number A51692, 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 Mark Fletcher Simonds, MD prescribe under Medicare Part D?

In 2024, Mark Fletcher Simonds, MD had 662 Medicare Part D claims for 187 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.