Adult Development & Aging Psychologist providers in the U.S.
287 NPPES records list adult development & aging psychologist as their primary taxonomy, about 0.1 per 100,000 residents; District of Columbia and North Dakota have the most per resident. A registry record is not proof of an active practice.
What taxonomy code 103TA0700X means
103TA0700X is the National Uniform Claim Committee code for Psychologist, Adult Development & Aging, in the grouping Behavioral Health & Social Service Providers. 287 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
A psychologist who specializes in geropsychology, which applies the knowledge and methods of psychology to understanding and helping older persons and their families to maintain well-being, overcome problems and achieve maximum potential during later life. Professional geropsychology appreciates the wide diversity among older adults, the complex ethical issues that can arise in geriatric practice and the importance of interdisciplinary models of care.
Source: NUCC Health Care Provider Taxonomy code set, definition as NUCC publishes it (nucc.org); counts from CMS NPPES.
Most per resident: the 8 highest
Source: CMS NPPES, primary taxonomy 103TA0700X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
Los Angeles has the most, 9
Source: CMS NPPES, primary taxonomy 103TA0700X by practice city, file of Aug 9, 2026.
All 44 states and D.C. with records, by state
| State | Records | Per 100,000 |
|---|---|---|
| Alabama | 3 | 0.1 |
| Alaska | 1 | 0.1 |
| Arizona | 4 | 0.1 |
| Arkansas | 5 | 0.2 |
| California | 42 | 0.1 |
| Colorado | 4 | 0.1 |
| Delaware | 2 | 0.2 |
| District of Columbia | 8 | 1.2 |
| Florida | 16 | 0.1 |
| Georgia | 3 | 0.0 |
| Idaho | 2 | 0.1 |
| Illinois | 3 | 0.0 |
| Indiana | 9 | 0.1 |
| Iowa | 2 | 0.1 |
| Kansas | 1 | 0.0 |
| Kentucky | 5 | 0.1 |
| Louisiana | 1 | 0.0 |
| Maine | 2 | 0.1 |
| Maryland | 9 | 0.1 |
| Massachusetts | 10 | 0.1 |
| Michigan | 17 | 0.2 |
| Minnesota | 3 | 0.1 |
| State | Records | Per 100,000 |
|---|---|---|
| Mississippi | 2 | 0.1 |
| Missouri | 3 | 0.0 |
| Montana | 2 | 0.2 |
| Nebraska | 9 | 0.5 |
| Nevada | 4 | 0.1 |
| New Hampshire | 1 | 0.1 |
| New Jersey | 6 | 0.1 |
| New Mexico | 2 | 0.1 |
| New York | 19 | 0.1 |
| North Carolina | 4 | 0.0 |
| North Dakota | 6 | 0.8 |
| Ohio | 27 | 0.2 |
| Oklahoma | 1 | 0.0 |
| Pennsylvania | 8 | 0.1 |
| Rhode Island | 1 | 0.1 |
| South Carolina | 1 | 0.0 |
| Tennessee | 3 | 0.0 |
| Texas | 19 | 0.1 |
| Vermont | 2 | 0.3 |
| Virginia | 1 | 0.0 |
| Washington | 6 | 0.1 |
| Wisconsin | 6 | 0.1 |
In federal data
- NUCC code103TA0700X · Psychologist
- Size rank399th of 688 specialties by records (0% of all)
- In its family17th of 18 Psychologist codes, 0.2% of the family
- Concentration7 states hold half of all records
Source: CMS NPPES; Medicare Part D Prescriber PUF; CMS Open Payments 2024. Presence in these files is not a quality judgment.
A sample of adult development & aging psychologist records
- Michelle AppelEagle River, AK1275306508
- Sarah HolmesBirmingham, AL1982334504
- Michelle BenjaminBirmingham, AL1578802351
- Andrea Snow, PHDTuscaloosa, AL1326227810
- Latasha GreeneNorth Little Rock, AR1902312960
- Corderio ThomasNorth Little Rock, AR1780310201
- Simeon PratherLittle Rock, AR1639991946
- Gary Souheaver, PH.D.Little Rock, AR1073581468
- Katrina HarrisWynne, AR1881358992
- Julia Lesselyong, PSYDPhoenix, AZ1922306604
- Jon Siegel, LCSWScottsdale, AZ1518984095
- Winston GawScottsdale, AZ1871163501
Registry order, not a ranking. Search by name to find one provider.
Common questions
How should I read Adult Development & Aging Psychologist's mid-pack national roster?
287 CMS-registered Adult Development & Aging Psychologist providers sit across 45 states; California leads with 42. Rank 399th of 688 NUCC specialties by headcount.
Where can I find an Adult Development & Aging Psychologist provider?
Adult Development & Aging Psychologist providers are listed in 45 states; Los Angeles leads by raw city count. By national headcount this code sits just above Adolescent Medicine (Internal Medicine) Physician and just below Emergency Medicine Pharmacist. Browse by state or search by name.
What does NUCC code 103TA0700X mean?
Adult Development & Aging Psychologist is NUCC taxonomy 103TA0700X in the Psychologist group. Counts are self-designated primary taxonomy at NPI enrollment, not board certification.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy (nucc.org); Medicare Part D Prescriber PUF; CMS Open Payments 2024. Counts are self-designated primary taxonomy, not board certification.
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.