Dr. Johnathan David Maskin, MD
- Medicare services, 2024
- 46
- Medicare patients, 2024
- 143
- Hospital affiliations
- 3
- Industry payments
- $3,395
- Medical groups
- 4
- Practice address
- 100 W. California Blvd, Pasadena, CA 91105
- Practice phone
- Call (626) 397-2618
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Huntington Hospital - Unit
Acute Care Hospital-Unit · Pasadena, California
Find Dr. Maskin's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Johnathan David Maskin is an anesthesiologist in Pasadena, California
Dr. Maskin practices at Huntington Hospital - Unit in Pasadena, California.
Dr. Maskin's NPI, 1386668366, was assigned on July 26, 2006. Dr. Maskin graduated from University of Cape Town Faculty of Medicine in 1980. Dr. Maskin holds California license A41837.
- NPI
- 1386668366NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537061338
- NPI enumeration date
- July 26, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 397-2618
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Johnathan David Maskin practices at Huntington Hospital - Unit in Pasadena, California
Dr. Maskin's primary practice is Huntington Hospital - Unit, at 100 W. California Blvd, Pasadena, CA 91105 in Los Angeles County. The practice phone is (626) 397-2618.
- Huntington Hospital - Unit100 W. California Blvd, Pasadena, CA 91105 · Los Angeles CountyPhone(626) 397-2618
Source: Dmand AI Affiliation Data
Dr. Johnathan David Maskin is affiliated with 3 sites of care and 4 medical groups
Dr. Maskin's primary practice is Huntington Hospital - Unit in Pasadena, California. Dr. Maskin is also affiliated with Huntington Hospital. The medical group on file is Pacific Valley Medical Group. Dmand AI also links Dr. Maskin to 1 more hospital and 3 medical groups, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Johnathan David Maskin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maskin practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Huntington Hospital - Unit | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Johnathan David Maskin is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Maskin's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Maskin is board certified in anesthesiology by the American Board of Anesthesiology. Dr. Maskin is licensed in California.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
Anesthesiologists near Dr. Maskin
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Johnathan David Maskin billed Medicare for 46 services in 2024
CMS data shows 46 Medicare services from Dr. Maskin across 2 procedure codes in 2024, for 143 Medicare patients. Medicare paid $1,190 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Maskin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 352024: 2820%
- Imaging
- 2023: 122024: 1850%
- Anesthesia
- 2023: 132024: 0100%
- Office and hospital visits
- 2023: 462024: 0100%
Dr. Maskin compared with the California median for anesthesiologists, 2024
- Dr. Maskin
- California median
- Medicare services
- 46vs 7236% below
- Medicare patients
- 143vs 143Close to median
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Maskin's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Maskin?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Maskin and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Johnathan David Maskin treated 143 Medicare patients in 2024, average age 75
CMS counts 143 Medicare patients who saw Dr. Maskin in 2024. The largest group is 65 to 74, with 58 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 1.80, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Maskin's median patient age at 59, with 55% women.
Dr. Maskin's Medicare patients by age, 2024
Dr. Maskin's Medicare patients by sex, 2024
- Women6445%
- Men7955%
Chronic conditions among Dr. Maskin's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis62%
- Ischemic heart disease55%
- Diabetes50%
- Heart failure41%
- Chronic kidney disease39%
- Atrial fibrillation34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Maskin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women55%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Johnathan David Maskin takes part in Medicare
Dr. Maskin accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Johnathan David Maskin received $3,395 in industry payments from 2016 to 2025
CMS Open Payments shows 51 general payments to Dr. Maskin from 19 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 77% of the total. Edwards Lifesciences Corporation paid the most, $1,413.
General payments to Dr. Maskin by program year, 2016 to 2025
General payments to Dr. Maskin by kind, 2016 to 2025
- Food and beverage$2,60377%
- Education$59718%
- Travel and lodging$1966%
Companies that paid Dr. Maskin the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Johnathan David Maskin graduated from University of Cape Town Faculty of Medicine
Dr. Maskin graduated from University of Cape Town Faculty of Medicine in 1980.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. Johnathan David Maskin accepts plans from 7 insurance carriers
Dr. Maskin is in network with 7 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- United Healthcare
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- Elevance
- HCSC
- Molina
Plan types Dr. Maskin accepts, by number of carriers
- Medicare3
- PPO3
- POS2
- EPO1
- HMO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Johnathan David Maskin's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Johnathan David Maskin
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Johnathan David Maskin's NPI number?
Dr. Johnathan David Maskin's NPI number is 1386668366. It was assigned on July 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Johnathan David Maskin?
Dr. Johnathan David Maskin is an anesthesiologist in Pasadena, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Johnathan David Maskin practice?
Dr. Maskin practices at 100 W. California Blvd, Pasadena, CA 91105. Dr. Maskin's primary practice is Huntington Hospital - Unit in Pasadena, California. Dmand AI also links Dr. Maskin to 1 hospital and 3 medical groups.
What is Dr. Johnathan David Maskin's office phone number?
The practice phone on file for Dr. Maskin is (626) 397-2618.
What is Dr. Johnathan David Maskin's medical license number?
Dr. Maskin holds California license A41837.
Which hospitals is Dr. Johnathan David Maskin affiliated with?
Dr. Maskin is affiliated with Huntington Hospital. Dmand AI links Dr. Maskin to 2 more hospitals.
What medical group is Dr. Johnathan David Maskin part of?
Dr. Maskin is linked to Pacific Valley Medical Group. Dmand AI links Dr. Maskin to 3 more medical groups.
Does Dr. Johnathan David Maskin accept Medicare?
Yes. CMS data shows Dr. Maskin billed Medicare for 46 services in 2024, and Dr. Maskin accepts Medicare assignment.
How many Medicare patients does Dr. Johnathan David Maskin see?
CMS counts 143 Medicare patients who saw Dr. Maskin in 2024, with an average age of 75.
Is Dr. Johnathan David Maskin board certified?
Yes. Dr. Maskin is board certified in anesthesiology by the American Board of Anesthesiology.
Show 5 more questionsShow fewer questions
What services does Dr. Johnathan David Maskin bill to Medicare?
In 2024, Dr. Maskin's most billed Medicare services were surgery: heart and blood vessels (36620) and ultrasound (76937).
Where did Dr. Johnathan David Maskin go to medical school?
Dr. Maskin graduated from University of Cape Town Faculty of Medicine in 1980.
Has Dr. Johnathan David Maskin received payments from drug or device companies?
CMS Open Payments shows $3,395 in general payments to Dr. Maskin from 19 companies from 2016 to 2025. The largest total came from Edwards Lifesciences Corporation.
How long has Dr. Johnathan David Maskin been practicing?
Dr. Maskin graduated from medical school in 1980, 46 years ago.
What insurance does Dr. Johnathan David Maskin accept?
Dr. Maskin is in network with 7 carriers, including United Healthcare, Aspirus Health Plan and Blue Cross and Blue Shield of Kansas City. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
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