NPPES file of Aug 9, 2026

Jason Robert Castillo, M.D.

MOHS-Micrographic Surgery Physician · Irvine, CA

Jason Robert Castillo, M.D. is a mohs-micrographic surgery physician with a practice address in Irvine, California, and NPI 1497098644, issued on Apr 5, 2013. Check the license (California A133196, 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
1497098644
Name
Jason Robert Castillo
Credential
M.D.
Primary taxonomy
MOHS-Micrographic Surgery Physician 207ND0101X
License numbers
A133196 CA
61767 MN
Self-reported in NPPES; status is on the state search
Practice location
6 Willard, Irvine, CA 92604
Phone
(949) 262-5780
Enumerated
Apr 5, 2013
Record last updated
Dec 3, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20190304001644); accepts Medicare assignment
Medical or professional school
University Of California, San Francisco School Of Medicine, 2013
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 mohs-micrographic surgery physician records → All 164 in California → Look up another NPI →

Also registered at 6 Willard

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

  1. Karen BuiPharmacist1124566013
  2. Jun Ho Chae, M.D.Family Medicine Physician1003811969
  3. Anne Chandsawang, D.O.Family Medicine Physician1679756118
  4. Carren ChangPharmacist1891234696
  5. Annie ChauPharmacist1245778265
  6. Soo Hyun Choi, M.D.Allergy & Immunology Physician1851596779

Verify Jason Robert Castillo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A133196    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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55% fewer Medicare Part D claims than the average mohs-micrographic surgery physician in 2024

254 Medicare Part D claims for 188 beneficiaries, against an average of 570 among the 1,396 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.

  1. Jason Castillo254
  2. Specialty average570

Most prescribed

  1. Ciprofloxacin Hcl52 claims
  2. Cephalexin46 claims
  3. Fluorouracil31 claims
  4. Doxycycline Monohydrate28 claims
  5. Imiquimod27 claims
  6. Mupirocin24 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. Southern California Permanente Medical GroupAnaheim, CA

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

Jason Robert Castillo among 164 mohs-micrographic surgery physician records in California

Jason Robert Castillo, M.D. is one of 164 mohs-micrographic surgery physician records with a practice address in California. 95% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 74% of them.

  • NPI issued2013 · 74% of these records are older, 21% newer
  • In a Medicare fileYes · 95% of these records are
  • In the CMS Doctors and Clinicians fileYes · 87% of these records are
  • Graduated2013 · median 2004 among the 143 with a school on file
  • Record last updated2021 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ND0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

MOHS-Micrographic Surgery Physician providers in California

There are 164 mohs-micrographic surgery physician records in California.

All 164 in California → Every provider in Irvine → MOHS-Micrographic Surgery Physician nationwide →

The 8 mohs-micrographic surgery physician records with the nearest ZIP codes

  1. James Waldman, M.D.Irvine, CA 926181619011764
  2. Danielle Moul, M.D.Laguna Beach, CA 926511700091113
  3. Brent Martin, MDLaguna Hills, CA 926531972990869
  4. Bobak Hedayati, MDNewport Beach, CA 926601568090272
  5. Gregory Henderson, M.D.Newport Beach, CA 926601619109519
  6. Larisa Lehmer, MDNewport Beach, CA 926601760845929
  7. Grace Liu, M.D.Newport Beach, CA 926601477564128
  8. Anne Marie McNeill, MD, PHDNewport Beach, CA 926601841365970

Common questions

What is Jason Robert Castillo, M.D.'s NPI number?

Jason Robert Castillo, M.D.'s National Provider Identifier (NPI) is 1497098644, issued on Apr 5, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Jason Robert Castillo, M.D. located?

The NPPES record lists a practice address at 6 Willard, Irvine, CA, 92604. Phone: (949) 262-5780. Providers update this record themselves, so call before visiting.

How can I verify Jason Robert Castillo, M.D.'s license?

NPPES lists California license number A133196, 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 Jason Robert Castillo, M.D. prescribe under Medicare Part D?

In 2024, Jason Robert Castillo, M.D. had 254 Medicare Part D claims for 188 beneficiaries; the average among mohs-micrographic surgery physician prescribers was 570. 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.

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.