Geralyn Datz, PHD
NPI 1972616076 · Health Psychologist · Hattiesburg, MS
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Geralyn Datz, PHD is a Health Psychologist provider in Hattiesburg, MS (NPI 1972616076).
Provider details
- NPI number
- 1972616076
- Entity type
- Individual
- Primary specialty
- Health PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 45736 (MS)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
749 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Administration of Psychological Or Neuropsychological Test By Technician, Each Additional 30 Minutes96139 | 358 | $30 |
| Psychotherapy, 1 Hour90837 | 121 | $129 |
| Evaluation of Psychological Test, Each Additional Hour96131 | 76 | $80 |
| Psychiatric Diagnostic Evaluation90791 | 72 | $132 |
| Evaluation of Psychological Test, First Hour96130 | 63 | $111 |
| Administration of Psychological Or Neuropsychological Test By Technician, First 30 Minutes96138 | 59 | $29 |
Typical Medicare-allowed amounts for these services range $29–$132 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-16
- Last updated
- 2011-11-30
Frequently asked questions
- What is Geralyn Datz's NPI number?
- Geralyn Datz's National Provider Identifier (NPI) is 1972616076, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Geralyn Datz's specialty?
- Geralyn Datz is listed in the NPPES registry with a primary specialty of Health Psychologist (Behavioral Health & Social Service Providers).
- Where is Geralyn Datz located?
- Geralyn Datz's practice location on file with NPPES is 1 Commerce Dr, Hattiesburg, MS 39402-1499.
- What is Geralyn Datz's phone number?
- The practice phone number listed in the NPPES registry for Geralyn Datz is (601) 255-1618.
- Does Geralyn Datz accept Medicare?
- Geralyn Datz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Geralyn Datz's NPI active?
- Yes — Geralyn Datz's NPI (1972616076) is active in the NPPES registry as of the last update on 2011-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.