Doctors in Fountain Valley, CA
Active healthcare providers in Fountain Valley sourced from the CMS NPPES weekly file, no proprietary ratings, no editorial scores. NPI counts, specialty distribution, and primary practice addresses refreshed each release.
Where this city sits in the corpus
Fountain Valley ranks 96th among 805 California cities by CMS provider count, holding 0.2% of the state's NPIs, led by Behavior Technician.
- 2,193
- NPPES providers in city
- 96th
- of 805 CA cities
- 0.2%
- of California providers
- 20.5%
- in top 3 specialties
Fountain Valley ranks #11 of 10 California cities for Behavior Technician.
Where Fountain Valley ranks among California cities
Provider count vs every California city in CMS NPPES (805 cities)
2,193 Top 12% higher than 88% of 805 cities
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 Fountain Valley
Share of the city's NPPES registrations by NUCC taxonomy
- Behavior Technician
Behavior Technician
205 providers
- Pharmacist
Pharmacist
142 providers
- Marriage & Family Th…
Marriage & Family Therapist
103 providers
- Internal Medicine Ph…
Internal Medicine Physician
95 providers
- Other Technician 74
Other Technician
74 providers
- Physician Assistant 65
Physician Assistant
65 providers
- Clinical Social Worker 60
Clinical Social Worker
60 providers
- Mental Health Counse… 55
Mental Health Counselor
55 providers
- Physical Therapist 53
Physical Therapist
53 providers
- Chiropractor 52
Chiropractor
52 providers
What this shows Behavior Technician is the largest specialty (205 providers, 9.3% of the city), followed by Pharmacist.
City vs state specialty index
Specialties Fountain Valley 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 , Fountain Valley over-indexes other technician at 14.6× the state average and under-indexes student in an organized health care education/training program at 0.35×. This reflects local practice structure, not care quality.
More common here than California average
- Other Technician 14.6×
- Specialist 2.8×
- Anesthesiology Physician 2.7×
- Physician Assistant 2.1×
Less common here than California average
How to read this directory & data limitations
Fountain Valley, California appears in the CMS National Plan and Provider Enumeration System with 2,193 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 Fountain Valley - 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 Fountain Valley 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 Fountain Valley is weighted toward Behavior Technician (205 clinicians, followed by Pharmacist with 142 and Marriage & Family Therapist with 103). 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, Fountain Valley reports roughly 5.6 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, Addiction (Substance Use Disorder) Counselor is the most prominent one with no provider currently listing a Fountain Valley practice address, a coverage gap Fountain Valley patients typically fill by traveling to a larger nearby hub.
For Fountain Valley 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 Fountain Valley
| # | Specialty | Providers | % of city |
|---|---|---|---|
| 1 | Behavior Technician | 205 | 9.3% |
| 2 | Pharmacist | 142 | 6.5% |
| 3 | Marriage & Family Therapist | 103 | 4.7% |
| 4 | Internal Medicine Physician | 95 | 4.3% |
| 5 | Other Technician | 74 | 3.4% |
| 6 | Physician Assistant | 65 | 3.0% |
| 7 | Clinical Social Worker | 60 | 2.7% |
| 8 | Mental Health Counselor | 55 | 2.5% |
| 9 | Physical Therapist | 53 | 2.4% |
| 10 | Chiropractor | 52 | 2.4% |
| 11 | Family Medicine Physician | 46 | 2.1% |
| 12 | Anesthesiology Physician | 45 | 2.1% |
| 13 | Family Nurse Practitioner | 43 | 2.0% |
| 14 | Pediatrics Physician | 43 | 2.0% |
| 15 | Specialist | 43 | 2.0% |
Healthcare Providers (Page 9)
| Name |
|---|
| Ennis Dearing Behavior Technician |
| Lori Debold, M.D. Pediatrics Physician |
| Howard Dedes, M.D. Pain Medicine (Physical Medicine & Rehabilitation) Physician |
| Amy Deeb, SLP Speech-Language Pathologist |
| Jessica Defalco, RD Registered Dietitian |
| Spencer Dehnavi, P.T. Physical Therapist |
| Andrea Del Castillo, LMFT Marriage & Family Therapist |
| Katie Del Rio Other Technician |
| James Demarco Independent Medical Examiner Chiropractor |
| Tanya Denne, ND Naturopath |
| Douglas Dennis, M.D. Emergency Medicine Physician |
| Gian Densing Marriage & Family Therapist |
| Pamela Deritis, LMFT151030 Marriage & Family Therapist |
| Vivian Derr, CPNP Pediatric Nurse Practitioner |
| Lauren Devaughn, CNM Advanced Practice Midwife |
| Robert Devereaux, MD Family Medicine Physician |
| Jane Dewilde, MFTI Marriage & Family Therapist |
| Bertram Dias, MD Pediatrics Physician |
| David Diaz, M.D. Specialist |
| Lily Diaz, RN Critical Care Medicine Registered Nurse |
| Kenia Diaz Molina Community Health Worker |
| Erica Dickson, DO Obstetrics & Gynecology Physician |
| An Dinh, PHARM D Pharmacist |
| Diana Dinh, CCC-SLP Speech-Language Pathologist |
| Lisa Dinh Behavior Technician |
| Martin Dinh School Counselor |
| Son Dinh, M.D. Internal Medicine Physician |
| Anh Do, PHARMD Pharmacist |
| Danh Do, M.D. Anesthesiology Physician |
| Karissa Do, O.D. Optometrist |
| Kevin Do Hematology & Oncology Physician |
| Kevin Do, LVN Licensed Vocational Nurse |
| Marianne Do, O.D. Optometrist |
| Michael Do, M.D. Anesthesiology Physician |
| Pauline Do, PHARM. D. Pharmacist |
| Peter Do, D.D.S. Dentist |
| Quynh Do Community Health Worker |
| Thach Do, R.PH. Pharmacist |
| Thang Do Behavior Analyst |
| Tiffany Do, PPS School Psychologist |
| Jaimee Doan Community Health Worker |
| Tammie Doan Licensed Practical Nurse |
| Trang Doan, RPH Pharmacist |
| Truong Doan, SLPA Speech-Language Assistant |
| Xuan Hao Doan, PA Medical Physician Assistant |
| Nicholas Doan Van, MD, F.A.C.C. INC. Specialist |
| Elena Domingo Calvete, LMFT Marriage & Family Therapist |
| Samantha Domingues, COTA/L Occupational Therapy Assistant |
| Karen Don, MD Internal Medicine Physician |
| Albert Dong Pharmacist |
Nearby Cities in California
Other California cities with provider coverage in the CMS NPPES registry.
Frequently Asked Questions
How many doctors are in Fountain Valley, CA?
What are the most common medical specialties in Fountain Valley?
Related guides
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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.
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.