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Specialists in Pasadena, CA

Browse 40 Specialist providers listed in NPPES with a practice address in Pasadena, California.

40 Healthcare Providers

How Pasadena compares with the U.S.

Pasadena has 29 Specialists per 100,000 residents, about 1.6 times the U.S. rate of 18.

That is 40 active Specialists with a practice address in Pasadena, for a population of 136,969.

The California rate is 15 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 Specialists in Pasadena listed in the CMS Medicare file (12 of 12) accept Medicare assignment. That is higher than the California share of 92%.

Only 12 of 40 active Specialists in Pasadena appear in the CMS Medicare file, so this share describes that smaller group.

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.

33% of Specialists in Pasadena listed in the CMS Medicare file (4 of 12) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the California share of 29%.

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).

Specialist Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Specialist practitioners in Pasadena, CA

Source: CMS PECOS
PECOS Enrolled Specialists 15 In Pasadena, CA
Part B Lab & Imaging Eligible 14 Diagnostic Referrals
DME Ordering Eligible 15 Durable Medical Equipment
Home Health Agency Referrals 13 HHA Ordering Eligible
Showing 1โ€“20 of 40 providers
With recent CMS data first, then Aโ€“Z
Active NPI Status Accepts Medicare Assignment
393 E Walnut Street Kaiser Permanente, Pasadena, CA 911880001
Phone: 8005417946
NPI Identifier 1033394408
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Dr. Ayad A Alanizi , MD

Specialist

Active NPI Status Accepts Medicare Assignment
1060 E Green St Ste 107, Pasadena, CA 911062413
Phone: 6267449018
NPI Identifier 1588726756
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Active NPI Status Accepts Medicare Assignment Telehealth Services Available
445 S Fair Oaks Ave, Pasadena, CA 911052632
Phone: 6267950411
NPI Identifier 1306952577
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Dr. Jason K Boutros , MD

Specialist

Active NPI Status Accepts Medicare Assignment
2554 E Washington Blvd, Ste A, Pasadena, CA 911071445
Phone: 6267988923
NPI Identifier 1942243563
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Dr. Almira Wilson Cann , MD

Specialist

Active NPI Status Accepts Medicare Assignment
1070 E Green St, Suite 200, Pasadena, CA 911062432
Phone: 6264050444
NPI Identifier 1699748392
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Dr. Scott L Carder , MD, PhD

Specialist

Active NPI Status
259 S Euclid Ave, Pasadena, CA 911012717
Phone: 6263957677
NPI Identifier 1588696793
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Dr. Daniel J Casper , MD, FACS

Specialist

Active NPI Status
10 Congress St, Suite 407, Pasadena, CA 911053023
Phone: 6267967158
NPI Identifier 1740403617
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Dr. Reyneiro Castro , MD

Specialist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
301 S Fair Oaks Ave, Suite 401, Pasadena, CA 911052561
Phone: 6267936680
NPI Identifier 1457496770
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Dr. Bonnie Connolly , MD

Specialist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
Dept La 21069, Pasadena, CA 911851069
Phone: 7146283211
NPI Identifier 1780648725
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Dr. Roy Clark Davis , MD

Specialist

Active NPI Status
10 Congress St, Suite 509, Pasadena, CA 911053023
Phone: 6267956327
NPI Identifier 1083748198
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Dr. David A Denenholz , MD

Specialist

Active NPI Status Accepts Medicare Assignment
960 E Green St, #330, Pasadena, CA 911062401
Phone: 6264494207
NPI Identifier 1801837331
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Active NPI Status
800 Fairmount Ave, 215, Pasadena, CA 911053150
Phone: 6263975126
NPI Identifier 1881712248
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Active NPI Status Accepts Medicare Assignment
301 S Fair Oaks Ave Ste 202, Pasadena, CA 911052536
Phone: 6267935250
NPI Identifier 1194884171
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Dr. Mona Mikael , PsyD

Specialist

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
595 E Colorado Blvd Ste 307, Pasadena, CA 911012021
Phone: 6267107838
NPI Identifier 1588862536
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Active NPI Status
425 South Fair Oaks Avenue, Suite A, Pasadena, CA 911052632
Phone: 6264490933
NPI Identifier 1740519677
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Dr. Charles E Niesen , MD

Specialist

Active NPI Status
960 E Green St, Suite L11, Pasadena, CA 911062412
Phone: 6265997600
NPI Identifier 1710915830
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Dr. Gabriel G Pai , MD

Specialist

Active NPI Status Accepts Medicare Assignment
960 E Green St, Pasadena, CA 911062401
Phone: 6264494207
NPI Identifier 1356388110
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Dr. Robert B Seltzer , MD

Specialist

Active NPI Status
960 E Green St, 108, Pasadena, CA 911062401
Phone: 6264493830
NPI Identifier 1437127099
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Active NPI Status Accepts Medicare Assignment
50 Bellefontaine St, Suite 304, Pasadena, CA 911053132
Phone: 6267889152
NPI Identifier 1720095235
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Active NPI Status
50 Bellefontaine St, Ste 303, Pasadena, CA 911053132
Phone: 6267934136
NPI Identifier 1639174063
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Frequently Asked Questions about Specialist in Pasadena

How do I check a Specialist 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.