James Philip Williams, MD
Pediatrics Physician · Nogales, AZ
James Philip Williams, MD is a pediatrics physician with a practice address in Nogales, Arizona, and NPI 1831403120, issued on Jul 29, 2010. Check the license (Arizona 43562, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- James Philip Williams
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 43562 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1852 N Mastick Way, Nogales, AZ 85621
- Phone
- (520) 375-6007
- Enumerated
- Jul 29, 2010
- Record last updated
- May 26, 2022
- Fax
- (520) 281-1112
- Medicaid ID
- 539080 AZ
- Medicare enrollment
- Enrolled (PECOS I20101124000100); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 1,309 in Arizona → Look up another NPI →
Also registered at 1852 N Mastick Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Adam, M.D., PHDPediatrics Physician1508191016
- Michael Allen, DMDDentist1740480029
- Christina Alvarez, RDHDental Hygienist1487344925
- Marivic Ashcroft, NPFamily Nurse Practitioner1740663509
- Melissa Avila Robledo, RDHDental Hygienist1750195319
- Cynthia Badilla, RDHDental Hygienist1851081301
Verify James Philip Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 43562Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Mariposa Community Health Center IncRio Rico, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Philip Williams among 1,309 pediatrics physician records in Arizona
James Philip Williams, MD is one of 1,309 pediatrics physician records with a practice address in Arizona. 41% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 62% of them.
- NPI issued2010 · 62% of these records are older, 35% newer
- In a Medicare fileYes · 41% of these records are
- In the CMS Doctors and Clinicians fileYes · 8% of these records are
- Graduated2007 · median 2013 among the 105 with a school on file
- Record last updated2022 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 pediatrics physician records list a practice address in Nogales
They are 13 of the 171 NPPES records with a practice address in Nogales, and 1,309 pediatrics physician records in Arizona.
All 1,309 in Arizona → Every provider in Nogales → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Mary Adam, M.D., PHDNogales, AZ 856211508191016
- Guadalupe Davila, MDNogales, AZ 856211073196416
- Kirstin Grahn, MDNogales, AZ 856211548218571
- Margie Hartfield, MDNogales, AZ 856211659468650
- Tanya Henry, M.D.Nogales, AZ 856211023235934
- Edith Hernandez Hinostroza, M.D.Nogales, AZ 856211780936922
- Gonzalo Ibarra Murrieta, M.D.Nogales, AZ 856211437446812
- Alfonso Robles, MDNogales, AZ 856211396232153
Common questions
What is James Philip Williams, MD's NPI number?
James Philip Williams, MD's National Provider Identifier (NPI) is 1831403120, issued on Jul 29, 2010. An NPI identifies a provider in billing; it is not a license.
Where is James Philip Williams, MD located?
The NPPES record lists a practice address at 1852 N Mastick Way, Nogales, AZ, 85621. Phone: (520) 375-6007. Providers update this record themselves, so call before visiting.
How can I verify James Philip Williams, MD's license?
NPPES lists Arizona license number 43562, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
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.