Christina Williams, M.D.
NPI 1396159679 · Psychiatry Physician · Houston, TX
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christina Williams, M.D. is a Psychiatry Physician provider in Houston, TX (NPI 1396159679).
Provider details
- NPI number
- 1396159679
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- BP10050691 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Aripiprazole | 22 |
| Escitalopram Oxalate | 15 |
| Hydroxyzine Hcl | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 301 University BlvdGalveston, TX 77555-0193Phone: (409) 772-0770Fax: (409) 747-4010
- 2950 North Loop W Ste 500Houston, TX 77092Phone: (281) 979-2242
Registry dates
- Enumerated
- 2014-06-16
- Last updated
- 2023-11-16
- Certified
- 2023-11-16
Frequently asked questions
- What is Christina Williams's NPI number?
- Christina Williams's National Provider Identifier (NPI) is 1396159679, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christina Williams's specialty?
- Christina Williams is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Christina Williams located?
- Christina Williams's practice location on file with NPPES is 5901 Long Dr, Houston, TX 77087-1003.
- What is Christina Williams's phone number?
- The practice phone number listed in the NPPES registry for Christina Williams is (713) 970-7000.
- Does Christina Williams accept Medicare?
- Christina Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christina Williams's NPI active?
- Yes — Christina Williams's NPI (1396159679) is active in the NPPES registry as of the last update on 2023-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.