Doctors and health care providers in Monrovia, CA
17,347 individual NPPES records list a practice address in Monrovia, 8th of 812 California cities. The largest group is behavior technician: 16,526, 95% of the city's records, against 18% across California. Page 224 of 347.
The 8 largest groups in Monrovia
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Monrovia in California
- Rank in California8th of 812 cities by records
- Share of the state1.8% of California's records
- Specialties present25 or more taxonomy codes
- Top three groups96.4% of all records
- Behavior Technician rank1st of the 10 California cities with the most
Compared with California as a whole, Monrovia has 5.4× the state's share of behavior technician records and 0.09× its share of marriage & family therapist records.
Providers in Monrovia, alphabetically
- Brianna NguyenBehavior Technician1093549297
- Ceez NguyenBehavior Technician1588491641
- Christine NguyenBehavior Technician1134807332
- Christy NguyenBehavior Technician1073405544
- Duc NguyenBehavior Technician1366146227
- Eileen NguyenBehavior Technician1699414706
- Emily NguyenBehavior Technician1306431952
- Ethan NguyenBehavior Technician1255188280
- Hailey NguyenBehavior Technician1871319939
- Hien NguyenBehavior Technician1801547831
- Isabella NguyenBehavior Technician1164371225
- Jeff NguyenBehavior Technician1568192128
- Jerry NguyenBehavior Technician1386394021
- Jessie NguyenBehavior Technician1336840560
- Jimmy NguyenBehavior Technician1548997133
- John NguyenBehavior Technician1790607968
- Joseph Nguyen, NONEBehavior Technician1710690193
- Kathleen NguyenBehavior Technician1881545630
- Kayla NguyenBehavior Technician1033952023
- Kevin NguyenBehavior Technician1548973209
- Leah Nguyen, PHARM.DPharmacist1164967477
- Long NguyenBehavior Technician1063396984
- Lynette NguyenBehavior Technician1619693694
- Minh NguyenBehavior Technician1154206209
- Noelle NguyenBehavior Technician1053246488
- Olivia NguyenBehavior Technician1356125165
- Pamela NguyenBehavior Technician1154035350
- Phuong Nguyen, RPHPharmacist1629370325
- Phuong NguyenBehavior Technician1063236164
- Richard NguyenBehavior Technician1174210223
- Shelbie NguyenBehavior Technician1841077831
- Sophia NguyenBehavior Technician1346191327
- Tawny NguyenBehavior Technician1063067973
- Theresa NguyenBehavior Technician1649896622
- Tien NguyenBehavior Technician1346046315
- Tiffany Nguyen, PHARM.D.Pharmacist1811929706
- Tiffany NguyenBehavior Technician1205544178
- Tommy NguyenBehavior Technician1396565271
- Trang NguyenBehavior Technician1760308563
- Tristan NguyenBehavior Technician1932966488
- VI NguyenBehavior Technician1134008675
- Britney NhanBehavior Technician1043934243
- Katrina Nhan, BCBABehavior Analyst1962053678
- Vinh Hoa Brittanie NhanBehavior Technician1477246874
- Kaylee NheanBehavior Technician1548983851
- Hsu Thet Htar Ni NiBehavior Technician1538985171
- Lisset NicanorBehavior Technician1104656461
- Andre NicassioBehavior Technician1932940079
- Natasha NicholasBehavior Technician1447183470
- Imia NichollsBehavior Technician1023894946
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
How to read this directory
Monrovia, California appears in the CMS National Plan and Provider Enumeration System with 17,347 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Monrovia - 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 Monrovia 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 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.
The provider mix in Monrovia is weighted toward Behavior Technician (16,526 clinicians, followed by Behavior Analyst with 109 and Marriage & Family Therapist with 94). 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, Monrovia reports roughly 44.5 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 Monrovia practice address, a coverage gap Monrovia patients typically fill by traveling to a larger nearby hub.
For Monrovia 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.
For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.
Common questions
How many doctors are in Monrovia, CA?
There are 17,347 registered healthcare providers in Monrovia, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Monrovia?
The most common specialties in Monrovia are Behavior Technician, Behavior Analyst, Marriage & Family Therapist, Speech-Language Pathologist, Student in an Organized Health Care Education/Training Program. Behavior Technician has the most providers with 16,526.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.