DR. ROBERT H WILLIAMS (M.D.) – Nephrology Physician, NPI 1386631992

DR. ROBERT H WILLIAMS (M.D.) is a healthcare provider. based in Cullman, Alabama. specializing in Nephrology Physician. They hold the professional credentials M.D.. They hold a License No. 6223 (AL). The NPI Number for DR. ROBERT H WILLIAMS (M.D.) is 1386631992

Main info

Male
54 Years Of Experience
Accepts Medicare Assignment
Name
DR. ROBERT H WILLIAMS (M.D.)
NPI
1386631992
Phone
(256) 739-3500
Address
1910 CHEROKEE AVE SW
Enumeration Date
29 September 2005
Last Update Date
15 August 2013

Doctor Profile

Medical School Name
UNIVERSITY OF ALABAMA SCHOOL OF MEDICINE
Secondary Phone
9314387344
Graduation Year
1972 (54 years ago)
PAC ID
2567496698
Group Practice PAC ID
5597896225
Professional Enrollment ID
I20200514000118
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience63
Completeness75
Years active:20State licenses:2Digital endpointsOther names

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Provider Addresses for DR. ROBERT H WILLIAMS (M.D.)

  • The Sanctuary at the Woodlands, 1910, Cherokee Avenue Southwest, Cullman, Cullman County, Alabama, 35056, United States

    CULLMAN, AL 35055

    Phone: (256) 739-3500

    Fax: (256) 775-6119

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2020-05-14

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking 2 Medicare enrollment records; no due dates published yet.

Enrollment records

2

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20061117000063IEmergency MedicineALTBD
I20200514000118IHospitalistTNTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 35055)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 5597896225View full group profile

Reviews

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Frequently asked questions

What number should I use to identify DR. ROBERT H WILLIAMS (M.D.) for billing?
Administrative and clinical systems typically use NPI 1386631992 for DR. ROBERT H WILLIAMS (M.D.).
Should I treat DR. ROBERT H WILLIAMS (M.D.) as an active provider?
Patients and plans typically see DR. ROBERT H WILLIAMS (M.D.) as active in the national extract.
What does the directory say DR. ROBERT H WILLIAMS (M.D.) does?
Insurance directories may phrase it differently, but here DR. ROBERT H WILLIAMS (M.D.) maps to Nephrology Physician. Clinical services aligned with this taxonomy classification.
Is DR. ROBERT H WILLIAMS (M.D.) tied to Cullman, Alabama?
If you are local to Cullman, Alabama, DR. ROBERT H WILLIAMS (M.D.) may be relevant to your search.
Why is information missing for DR. ROBERT H WILLIAMS (M.D.)?
Providers choose how much contact data to publish. Missing fields do not mean the profile is fake.

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