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Anesthesiology Specialists in Thousand Oaks, CA

Browse 30 Anesthesiology providers listed in NPPES with a practice address in Thousand Oaks, California.

30 Healthcare Providers

How Thousand Oaks compares with the U.S.

Thousand Oaks has 24 clinicians in Anesthesiology per 100,000 residents, about 1.3 times the U.S. rate of 18.

That is 30 active clinicians in Anesthesiology with a practice address in Thousand Oaks, for a population of 125,205.

The California rate is 19 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Anesthesiology in Thousand Oaks listed in the CMS Medicare file (15 of 15) accept Medicare assignment. That is similar to the California share of 97%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

27% of clinicians in Anesthesiology in Thousand Oaks listed in the CMS Medicare file (4 of 15) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the California share of 2%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Anesthesiology Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Anesthesiology practitioners in Thousand Oaks, CA

Source: CMS PECOS
PECOS Enrolled Specialists 17 In Thousand Oaks, CA
Part B Lab & Imaging Eligible 17 Diagnostic Referrals
DME Ordering Eligible 18 Durable Medical Equipment
Home Health Agency Referrals 17 HHA Ordering Eligible
Showing 1โ€“20 of 30 providers
With recent CMS data first, then Aโ€“Z

Dr. Jason Ezra Cohen , MD

Anesthesiology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1120 Newbury Rd Ste 150, Thousand Oaks, CA 913203663
Phone: 8777246349
NPI Identifier 1013448653
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Dr. Amber Lea Coleman , MD

Anesthesiology

Active NPI Status
215 W Janss Rd, Department Of Anesthesiology, Thousand Oaks, CA 913601847
Phone: 9512657746
NPI Identifier 1841582111
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Dr. Michael H. Goldberg , MD

Anesthesiology

Active NPI Status Accepts Medicare Assignment
215 W Janss Rd, Thousand Oaks, CA 913601847
Phone: 8053704553
NPI Identifier 1679591788
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Dr. Hagop V Karpanian , MD

Anesthesiology

Active NPI Status Accepts Medicare Assignment
215 W Janss Rd, Thousand Oaks, CA 913601847
Phone: 6503880062
NPI Identifier 1164534103
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Dr. Nahum Isaac Kryzman , MD

Anesthesiology

Active NPI Status Accepts Medicare Assignment
215 W Janss Rd, Thousand Oaks, CA 913601847
Phone: 8054972727
NPI Identifier 1679969760
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Dr. Erna M. Kwong , MD

Anesthesiology

Active NPI Status
215 W Janss Rd, Thousand Oaks, CA 913601847
Phone: 8054972727
NPI Identifier 1033145388
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Dr. Liem Lechau , MD

Anesthesiology

Active NPI Status Accepts Medicare Assignment
215 W Janss Rd, Thousand Oaks, CA 913601847
Phone: 8053704521
NPI Identifier 1396756052
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Dr. Michael C. Lee , MD

Anesthesiology

Active NPI Status Accepts Medicare Assignment
2230 Lynn Rd Ste 320, Thousand Oaks, CA 913601973
Phone: 8504491600
NPI Identifier 1477788354
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Dr. James T. Lin , MD

Anesthesiology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
558 Saint Charles Dr, Suite 110, Thousand Oaks, CA 913603903
Phone: 8055577050
NPI Identifier 1821009580
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Dr. Dustin Jon Lloyd , DO

Anesthesiology

Active NPI Status Accepts Medicare Assignment
215 W Janss Rd, Thousand Oaks, CA 913601847
Phone: 6198224751
NPI Identifier 1508196247
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Dr. Stephen A. Maloon , MD

Anesthesiology

Active NPI Status
2230 Lynn Rd, Suite 106, Thousand Oaks, CA 913601901
Phone: 8053703137
NPI Identifier 1396765566
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Dr. Erin Mcnamara , MD

Anesthesiology

Active NPI Status Accepts Medicare Assignment
215 W Janss Rd, Thousand Oaks, CA 913601847
Phone: 8054972727
NPI Identifier 1568819498
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Dr. Mark E. Merriman , MD

Anesthesiology

Active NPI Status
227 W Janss Rd, Ste 240, Thousand Oaks, CA 913601848
Phone: 8053710455
NPI Identifier 1104835487
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Philip Ostermann

Anesthesiology

Active NPI Status Accepts Medicare Assignment
215 W Janss Rd, Surgery Dept, Thousand Oaks, CA 913601847
Phone: 8053704521
NPI Identifier 1821235623
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Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1120 Newbury Rd Ste 100, Thousand Oaks, CA 913203663
Phone: 8052303100
NPI Identifier 1710475199
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Dr. Scott D. Picker , MD

Anesthesiology

Active NPI Status Accepts Medicare Assignment
215 W Janss Rd, Thousand Oaks, CA 913601847
Phone: 8053704521
NPI Identifier 1194734434
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Dr. Stephen J. Reidy , MD

Anesthesiology

Active NPI Status Accepts Medicare Assignment
215 W Janss Rd, Thousand Oaks, CA 913601847
Phone: 8053704521
NPI Identifier 1417973124
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Dr. Guy G Sanani , MD

Anesthesiology

Active NPI Status
311 Haigh Rd Ste 100, Thousand Oaks, CA 913203523
Phone: 8052735200
NPI Identifier 1922074301
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Dr. Bradley I. Spiegel , MD

Anesthesiology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
415 East Rolling Oaks Drive, Suite#115, Thousand Oaks, CA 913611036
Phone: 8052303166
NPI Identifier 1760491039
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Dr. Edward Stern , MD

Anesthesiology

Active NPI Status
2066 Seabreeze St, Thousand Oaks, CA 913206554
Phone: 8053756391
NPI Identifier 1639449390
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Frequently Asked Questions about Anesthesiology in Thousand Oaks

How do I check a Anesthesiology practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the California licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.