Healthcare professionals in California
- Healthcare professionals
- 998,811
- Physicians (MD, DO)
- 144,279
- Nurses and NPs
- 85,532
- Physician assistants
- 19,356
- Cities with 50+ HCPs
- 565
There are 144,279 physicians among 998,811 healthcare professionals in California. Los Angeles has the most, 69,218, and Stanford Hospital at 300 Pasteur Drive has the most affiliated doctors, 3,928.
Find work emails and mobile numbers for 998,811 California HCPs
Validated work emails and mobile numbers for California physicians, nurses and every other HCP type, found through healthcare waterfall enrichment, with a free Dmand AI account.
There are 144,279 physicians (MD and DO) among 998,811 healthcare professionals in California
Counting every HCP with an active NPI and a California practice address. Behavioral health clinicians are the largest group, with 405,301, and nurses and nurse practitioners third, with 85,532.
California HCPs by type
- Behavioral health clinicians405,301
- Physicians (MD, DO)144,279
- Non-clinical and support staff57,001
- Home and community care workers55,316
- Therapists (PT and OT)43,349
- Pharmacists36,472
- Athletic trainers23,639
- Physician assistants19,356
- Other HCPs85,903
Sources: NPPES NPI Registry (CMS) and Dmand AI Professional Profile Data
Internal medicine is the most common physician specialty in California, with 18,721 physicians
Family medicine is second, with 17,777, and pediatrics third, with 9,489. Each physician is counted once, under the primary specialty on their NPI record.
- Internal medicine18,948
- Family medicine17,812
- Pediatrics9,564
- Psychiatry8,883
- Emergency medicine8,269
- Anesthesiology7,682
- Obstetrics and gynecology5,321
- Diagnostic radiology4,679
- Surgery3,354
- Hospitalist3,297
- Ophthalmology2,965
- Cardiovascular disease2,557
- Neurology2,343
- Orthopaedic surgery2,316
- General practice2,285
- Gastroenterology2,103
Sources: NPPES NPI Registry (CMS) and Dmand AI Professional Profile Data
Stanford Hospital at 300 Pasteur Drive has the most affiliated doctors in California, with 3,928
UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco is second with 2,948 physicians, and Ronald Reagan UCLA Medical Center third with 2,750. Physicians are counted at each hospital where they have a current affiliation, wherever they live.
| # | Hospital | Health system | Physicians | HCPs |
|---|---|---|---|---|
| 1 | Stanford Hospital at 300 Pasteur DriveStanford | Stanford University | 3,928 | 5,935 |
| 2 | UCSF Helen Diller Medical Center at Parnassus HeightsSan Francisco | University of California Health | 2,948 | 4,556 |
| 3 | Ronald Reagan UCLA Medical CenterLos Angeles | University of California Health | 2,750 | 3,611 |
Source: Dmand AI Affiliation Data
The Permanente Medical Group, Inc. has the most California doctors of any medical group, with 11,708
Southern California Permanente Medical Group is second with 11,175 physicians, and UCSF Pediatrics third with 3,527. Counts are physicians and HCPs with a California address.
Sources: Dmand AI Affiliation Data and Dmand AI Org Hierarchy Data
For health IT teams
Dmand AI has the EHR for 409,767 of 998,811 California HCPs, at their hospital and their practice. Filter by Epic, Oracle Health, MEDITECH, athenahealth and more, then reach them with validated work emails and mobile numbers.
Group practices and clinics are the most common site of care for California healthcare professionals, with 136,007
Hospitals are second, with 131,102. A clinician can practice at several kinds of site, so the shares overlap. Pharmacies are left out.
California HCPs by site of care
- Group practices and clinics136,007
- Hospitals131,102
- Physician offices26,093
- FQHCs19,012
- Home health agencies13,591
- Ambulatory surgery centers11,956
- Therapy and rehab centers10,693
- Breast imaging centers6,789
- Urgent care centers5,800
- Skilled nursing facilities5,209
See every site where California HCPs practice
Each public profile names one place an HCP practices. A free account shows every current hospital, clinic and medical group, the employer and validated contacts for all 998,811.
Sources: Dmand AI Affiliation Data and Dmand AI Practice Data
Los Angeles has the most doctors in California, with 69,218 healthcare professionals
More California cities with 10,000 or more HCPs
- Fresno18,790
- Long Beach16,943
- Monrovia15,101
- Orange13,870
- Riverside13,824
- Stockton13,767
- Rancho Cucamonga11,964
- Bakersfield11,302
- Anaheim10,769
565 California cities have 50 or more HCPs, and each one has its own page.
Source: NPPES NPI Registry (CMS)
32% of California physicians finished medical school 30 or more years ago
30,440 of the 94,261 California physicians with a graduation year on file. 13,738 graduated in the last 10 years.
Physicians by years since medical school
- Under 10 years ago13,738
- 10 to 19 years ago26,771
- 20 to 29 years ago23,312
- 30 to 39 years ago16,216
- 40 or more years ago14,224
Source: Dmand AI Professional Profile Data
Every California HCP profile shows where they practice now, their Medicare activity and their NPI details
- Primary practiceThe main place they practice, with its type and cityOn every profile
- Every site of careEach hospital, clinic and group where they practice nowWith a free account
- EmployerThe organization they work for, when one is on fileWith a free account
- Medicare servicesServices and procedure codes billed to Medicare, from CMSOn every profile
- Medicare Part D prescribingClaims and drug costs from Part D, from CMSOn every profile
- Industry paymentsPayments from drug and device makers, from CMS Open PaymentsOn every profile
- Publications and clinical trialsResearch papers and trials linked to the NPI, when on fileOn every profile
- Licenses and graduation yearState license numbers and medical school graduation yearOn every profile
- NPI detailsNPI, enumeration date, primary taxonomy and practice addressOn every profile
- Work email and mobile numberFound on request through healthcare waterfall enrichment, then validatedWith a free account
- EHR in useThe EHR at each site where they practiceWith a free account
- Colleagues at each siteThe clinicians they work with at each hospital and groupWith a free account
Free account: 30 days free, self-serve, no credit card.
Sources: NPPES NPI Registry (CMS), Medicare Physician & Other Practitioners (CMS), Open Payments (CMS) and Dmand AI Affiliation Data
Sources for the California HCP directory
| Data on this page | Source |
|---|---|
| HCPs, types and specialties | NPPES NPI Registry (CMS) and Dmand AI Professional Profile Data |
| Sites of care, hospitals and medical groups | Dmand AI Affiliation Data |
| Medical school graduation year | Dmand AI Professional Profile Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
The directory counts HCPs with an active individual NPI, a name and a California practice address.
FAQ
Frequently asked questions about doctors and healthcare professionals in California
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
How many doctors are in California?
144,279 physicians (MDs and DOs) have an active NPI and a California practice address, among 998,811 California healthcare professionals.
How many healthcare professionals are in California?
998,811: 405,301 behavioral health clinicians, 144,279 physicians, 85,532 nurses and nurse practitioners, 57,001 non-clinical and support staff and 306,698 others.
What are the most common physician specialties in California?
By primary specialty: internal medicine (18,721), family medicine (17,777), pediatrics (9,489), psychiatry (8,815), emergency medicine (8,232).
Which California hospitals have the most doctors?
Stanford Hospital at 300 Pasteur Drive, with 3,928 affiliated physicians, followed by UCSF Helen Diller Medical Center at Parnassus Heights with 2,948 and Ronald Reagan UCLA Medical Center with 2,750.
Which California cities have the most doctors?
Los Angeles, with 69,218 healthcare professionals, 11,263 of them physicians. San Diego (53,542) and San Francisco (39,295) follow.
How can I contact healthcare professionals in California?
Dmand AI finds validated work emails, mobile numbers and practice phone numbers for healthcare professionals in California through healthcare waterfall enrichment, matched to the site where each one practices now. They are available with a free Dmand AI account: 30 days free, self-serve, no credit card.
Dmand AI
Find the right contacts among California healthcare professionals
Search 998,811 California HCPs by specialty, hospital, group and city, with validated work emails and mobile numbers.
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