2026 data CMS NPPES NUCC Taxonomy

Doctors in Fremont, CA

Active healthcare providers in Fremont sourced from the CMS NPPES weekly file, no proprietary ratings, no editorial scores. NPI counts, specialty distribution, and primary practice addresses refreshed each release.

4,638
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Behavior Technician
Top specialty
994 providers
California
State
CA

Where this city sits in the corpus

Fremont ranks 36th among 805 California cities by CMS provider count, holding 0.5% of the state's NPIs, led by Behavior Technician.

4,638
NPPES providers in city
36th
of 805 CA cities
0.5%
of California providers
29.6%
in top 3 specialties

Fremont ranks #11 of 10 California cities for Behavior Technician.

Where Fremont ranks among California cities

Provider count vs every California city in CMS NPPES (805 cities)

4,638 Top 4% higher than 96% of 805 cities

0–200: 398 cities (49%). Below this entry. 200–400: 103 cities (13%). Below this entry. 400–600: 45 cities (6%). Below this entry. 600–800: 48 cities (6%). Below this entry. 800–1,000: 29 cities (4%). Below this entry. 1,000–1,200: 15 cities (2%). Below this entry. 1,200–1,400: 17 cities (2%). Below this entry. 1,400–1,600: 15 cities (2%). Below this entry. 2K+: 135 cities (17%). This entry sits in this band. This city 0 2K+ California cities (providers), bucketed by value

Each bar is a band; taller bars hold more cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS National Plan & Provider Enumeration System (NPPES) · 2026

Specialty mix in Fremont

Share of the city's NPPES registrations by NUCC taxonomy

providers

What this shows Behavior Technician is the largest specialty (994 providers, 21.4% of the city), followed by Student in an Organized Health Care Education/Training Program.

Source CMS NPPES · city_top_specialties As of 2026

City vs state specialty index

Specialties Fremont has more, and fewer, of than California average

Each multiple is this city's share of a specialty divided by that specialty's average share across California , Fremont over-indexes acupuncturist at 2.1× the state average and under-indexes addiction (substance use disorder) counselor at 0.44×. This reflects local practice structure, not care quality.

More common here than California average

Less common here than California average

How to read this directory & data limitations

Fremont, California appears in the CMS National Plan and Provider Enumeration System with 4,638 registered healthcare providers spanning 20 distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Fremont - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Fremont practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2023 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Fremont is weighted toward Behavior Technician (994 clinicians, followed by Student in an Organized Health Care Education/Training Program with 198 and Pharmacist with 183). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to California's population, Fremont reports roughly 11.9 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

Of California's most common specialties, Case Manager/Care Coordinator is the most prominent one with no provider currently listing a Fremont practice address, a coverage gap Fremont patients typically fill by traveling to a larger nearby hub.

For Fremont patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

Which specialties are most common in Fremont

# Specialty Providers% of city
1 Behavior Technician 994 21.4%
2 Student in an Organized Health Care Education/Training Program 198 4.3%
3 Pharmacist 183 3.9%
4 Physical Therapist 153 3.3%
5 General Practice Dentistry 153 3.3%
6 Internal Medicine Physician 145 3.1%
7 Marriage & Family Therapist 144 3.1%
8 Acupuncturist 111 2.4%
9 Dentist 110 2.4%
10 Behavior Analyst 104 2.2%
11 Counselor 104 2.2%
12 Mental Health Counselor 96 2.1%
13 Pediatrics Physician 95 2.0%
14 Clinical Social Worker 95 2.0%
15 Registered Nurse 91 2.0%

Healthcare Providers (Page 70)

Name
Stephanie Romero
Behavior Technician
Aysia Romero-Williams
Behavior Technician
Isabel Romo
Behavior Technician
Yvonne Ronkainen, BA, PPS
School Counselor
Vanessa Rooks
Behavior Technician
Jennyfer Rosas
Behavior Technician
Karina Rosas
Licensed Vocational Nurse
Barry Rose, M.D
Orthopaedic Surgery Physician
Nichole Rose, RN,PHN,BSN
Registered Nurse
David Chris Rosenberg
Behavior Technician
Lauren Rosenthal
Marriage & Family Therapist
Kayci Rossi
Massage Therapist
Yuliya Rostovtseva, MD
Specialist
Robert Roth, MD
Dermatology Physician
Lindsay Rotter
School Counselor
Susanne Rough, MSRD
Registered Dietitian
Karen Rowley, MD
Cytopathology Physician
Suparna Roy
Behavior Technician
Neha Roy Karintholil
Behavior Technician
Nefertari Royston, MA PPS
School Psychologist
Talia Rubin
Clinical Social Worker
Alisyn Rubio
Mental Health Counselor
Jenny Rubio
Behavior Technician
Lenina Rubio
Behavior Technician
Rodger Ruby, DO
Family Medicine Physician
Loren Rucker-Borja
Marriage & Family Therapist
Larissa Rufner
Behavior Technician
Bianca Ruiz
Behavior Technician
Isabella Ruiz
Behavior Technician
Nancy Ruiz
Behavior Technician
Valerie Ruiz
Physical Therapist
Edmundo Ruiz Davila, M.D.
Family Medicine Physician
Jaquelyn Ruiz Flores
Behavior Technician
Veronica Runyan
Behavior Technician
Pooja Rupani
Clinical Psychologist
Romarre Rushing
Behavior Analyst
Melissa Rustia, R.N.
Registered Nurse
Valerie Rutenburg
Behavior Technician
Graciela Ruvalcaba
Behavior Technician
Catrina Ruybal
Behavior Technician
Michael Ryan, MD
Student in an Organized Health Care Education/Training Program
Jasmine Saadat
Student in an Organized Health Care Education/Training Program
Frances Sabado, O.D.
Optometrist
Khaile Sabado
Behavior Technician
Jennifer Sabar
Addiction (Substance Use Disorder) Counselor
Sara Saber, DDS
Dentist
Maskeen Sabharwal, MD
Ophthalmology Physician
Preet Sabharwal, PSYD
Mental Health Counselor
Joshane Zadie Sablay
Behavior Technician
Gregory Sabo, M.D.
Diagnostic Radiology Physician

Nearby Cities in California

Other California cities with provider coverage in the CMS NPPES registry.

Compare specialties side-by-side →

Frequently Asked Questions

How many doctors are in Fremont, CA?
There are 4,638 registered healthcare providers in Fremont, CA, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Fremont?
The most common specialties in Fremont are Behavior Technician, Student in an Organized Health Care Education/Training Program, Pharmacist, Physical Therapist, General Practice Dentistry. Behavior Technician has the most providers with 994.
Related guides

Provider data from CMS NPPES (download.cms.gov/nppes); specialty classification from NUCC Health Care Provider Taxonomy. PlainDoctor does not rate or rank providers. Methodology · About

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from CMS National Plan and Provider Enumeration System (NPPES). Consult a qualified professional before making decisions based on this data.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-20.