Johnathan David Maskin, M.D.
Anesthesiology Physician · Pasadena, CA
Johnathan David Maskin, M.D. is an anesthesiology physician with a practice address in Pasadena, California, and NPI 1386668366, issued on Jul 26, 2006. Check the license (California A41837, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Johnathan David Maskin
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A41837 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 W California Blvd, Pasadena, CA 91105
- Phone
- (626) 397-5000
- Enumerated
- Jul 26, 2006
- Record last updated
- Feb 14, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (626) 397-2912
- Medicaid ID
- 00A418370 CA
- Medicare enrollment
- Enrolled (PECOS I20050329000540); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 100 W California Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Devan Abhari, MDStudent in an Organized Health Care Education/Training Program1922849041
- Lina Acopians, DOHospitalist Physician1548821523
- Daniel Adran, MDNeuroradiology Physician1518456441
- Alipasha Adrangui, M.D.Hospitalist Physician1780911263
- Vahe Aghajanyan, M.D.Student in an Organized Health Care Education/Training Program1447047238
- Ignacio Aguilar, RNFARegistered Nurse First Assistant1497583603
Verify Johnathan David Maskin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A41837Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $453.95
15 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 17,774 providers of this specialty with any payment received $669.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Pacific Valley Medical GroupPasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Johnathan David Maskin among 7,571 anesthesiology physician records in California
Johnathan David Maskin, M.D. is one of 7,571 anesthesiology physician records with a practice address in California. 71% 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, 53% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1980 · median 2006 among the 4,868 with a school on file
- Record last updated2008 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in California
There are 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Pasadena → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- James Buese, M.D.Pasadena, CA 911051295756237
- Frederic Bushnell, M.D.Pasadena, CA 911051003830092
- Evon Cadogan, M.D.Pasadena, CA 911051538180567
- Thomas Carpenter, M.D.Pasadena, CA 911051073537064
- Barbara Gasior, M.D.Pasadena, CA 911051730121369
- William Harrity, M.D.Pasadena, CA 911051598786444
- Kjell Hult, M.D.Pasadena, CA 911051215958251
- Christian Koch, M.D.Pasadena, CA 911051437179736
Common questions
What is Johnathan David Maskin, M.D.'s NPI number?
Johnathan David Maskin, M.D.'s National Provider Identifier (NPI) is 1386668366, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Johnathan David Maskin, M.D. located?
The NPPES record lists a practice address at 100 W California Blvd, Pasadena, CA, 91105. Phone: (626) 397-5000. Providers update this record themselves, so call before visiting.
How can I verify Johnathan David Maskin, M.D.'s license?
NPPES lists California license number A41837, 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.
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.