Mechelle Williams, ACNP
NPI 1598986150 · Acute Care Nurse Practitioner · Katy, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mechelle Williams, ACNP is a Acute Care Nurse Practitioner provider in Katy, TX (NPI 1598986150).
Provider details
- NPI number
- 1598986150
- Entity type
- Individual
- Primary specialty
- Acute Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ACNP
- Sex
- Female
- Sole proprietor
- No
- License
- 597495 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing 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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,600 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) |
|---|---|---|
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 762 | $157 |
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 167 | $108 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 155 | $53 |
| Chronic Care Management Services for Two Or More Chronic Conditions, First 30 Minutes Provided Personally By Health Care Professional, Per Calendar Month99491 | 131 | $72 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 82 | $65 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 69 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 168 | 37 |
| Donepezil Hcl | 113 | 22 |
| Amlodipine Besylate | 89 | 19 |
| Levothyroxine Sodium | 89 | 25 |
| Memantine Hcl | 85 | 21 |
| Furosemide | 84 | 20 |
| Pantoprazole Sodium | 81 | 13 |
Practice location
Mailing address
Additional practice locations (1)
- 1480 Katy Flewellen RdKaty, TX 77494-6349Phone: (832) 707-5701Fax: (281) 254-7765
Registry dates
- Enumerated
- 2007-05-01
- Last updated
- 2018-03-17
Frequently asked questions
- What is Mechelle Williams's NPI number?
- Mechelle Williams's National Provider Identifier (NPI) is 1598986150, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mechelle Williams's specialty?
- Mechelle Williams is listed in the NPPES registry with a primary specialty of Acute Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mechelle Williams located?
- Mechelle Williams's practice location on file with NPPES is 24275 Katy Fwy Ste 400, Katy, TX 77494-7267.
- What is Mechelle Williams's phone number?
- The practice phone number listed in the NPPES registry for Mechelle Williams is (346) 387-7171.
- Does Mechelle Williams accept Medicare?
- Mechelle Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mechelle Williams's NPI active?
- Yes — Mechelle Williams's NPI (1598986150) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.