2026 NPPES data Nurse Practitioner NPI 1831751130 CRNP
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CHRISTOPHER WILLIAMS, CRNP

Nurse Practitioner in CULLMAN, Alabama. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
8K
Medicare Part D claims · 333 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

CHRISTOPHER WILLIAMS, CRNP filed 7,973 Medicare Part D claims in 2023 as a Nurse Practitioner in CULLMAN, Alabama, prescribing 87% generic.

8K
Part D claims, 2023
87%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

CHRISTOPHER WILLIAMS, CRNP's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

7,973 Top 3% higher than 97% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about CHRISTOPHER WILLIAMS, CRNP?

Quality data not reported

NPI registry status

Active

Issued 07/08/2019

NPI 1831751130

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

7,973 636% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

Specialty distribution in Alabama

How Nurse Practitioner compares to other specialties among Alabama providers

Alabama providers

Nurse Practitioner share within Alabama

1. Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nurse Practitioner share within Alabama

Specialty board-certification context

Estimated specialty board-certified rate — Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Nurse Practitioner) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

CHRISTOPHER WILLIAMS, CRNP appears in the CMS NPPES registry as a Nurse Practitioner provider holding CRNP credentials at 320 COUNTY ROAD 676, CULLMAN, AL, 35055, with a listed phone of (256) 339-0901. NPI 1831751130 was issued on 07/08/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WILLIAMS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 7,973 prescription claims written by this provider, covering 333 Medicare beneficiaries and totaling roughly $753K in drug spend, split 13% brand-name and 87% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

320 COUNTY ROAD 676
CULLMAN, AL 35055

Provider Details

NPI 1831751130
Specialty Nurse Practitioner
Credentials CRNP
Gender Male
NPI Issued 07/08/2019

Brand vs generic prescribing mix · Typical

CHRISTOPHER WILLIAMS, CRNP — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 7,973 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

7,973
Total Claims
$753K
Total Drug Cost
333
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,738
Total Day Supply
225,667
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$604K
Generic Drug Cost
$145K
Antibiotic Claims
315

Patient Demographics

Average Patient Age
80.6 years
Avg HCC Risk Score
1.76
Gender Split
73% female / 27% male
Age Distribution
<65: 26, 65-74: 61, 75-84: 106, 85+: 140

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What CHRISTOPHER WILLIAMS, CRNP prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
370
Levothyroxine Sodium
314
Amlodipine Besylate
282
Furosemide
240
Trazodone Hcl
240
Donepezil Hcl
216
Lisinopril
202
Sertraline Hcl
195
Potassium Chloride
194
Pantoprazole Sodium
168

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Nurse Practitioner Overview

How CHRISTOPHER WILLIAMS, CRNP fits within the Nurse Practitioner landscape nationally.

87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider

CHRISTOPHER WILLIAMS, CRNP's 7,973 claims are above the specialty average of 1,084.

Nearby Nurse Practitioner Providers in Alabama

Other clinicians with the same primary specialty enrolled in Alabama, drawn from the same CMS NPPES roster as WILLIAMS.

Compare Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is CHRISTOPHER WILLIAMS, CRNP's specialty?
CHRISTOPHER WILLIAMS, CRNP specializes in Nurse Practitioner and practices in CULLMAN, Alabama. Credentials: CRNP.
How much does CHRISTOPHER WILLIAMS, CRNP prescribe under Medicare Part D?
In 2023, CHRISTOPHER WILLIAMS, CRNP wrote 7,973 Medicare Part D claims totaling $753K in drug costs for 333 beneficiaries.
Where is CHRISTOPHER WILLIAMS, CRNP located?
CHRISTOPHER WILLIAMS, CRNP is located at 320 COUNTY ROAD 676, CULLMAN, AL, 35055. Phone: (256) 339-0901.
What is CHRISTOPHER WILLIAMS, CRNP's NPI number?
CHRISTOPHER WILLIAMS, CRNP's National Provider Identifier (NPI) is 1831751130, issued on 07/08/2019.
Does CHRISTOPHER WILLIAMS, CRNP prescribe more brand-name or generic drugs?
CHRISTOPHER WILLIAMS, CRNP's prescribing is 13% brand-name and 87% generic drugs by claim count, with $604K in brand drug costs.
How many Nurse Practitioner providers are there in the US?
There are 87,227 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does CHRISTOPHER WILLIAMS, CRNP prescribe most often?
Based on 2023 Medicare Part D data, CHRISTOPHER WILLIAMS, CRNP's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHRISTOPHER WILLIAMS, CRNP accept Medicare?
CHRISTOPHER WILLIAMS, CRNP appears in CMS Medicare data with 7,973 Part D claims and 333 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHRISTOPHER WILLIAMS, CRNP's credentials?
CHRISTOPHER WILLIAMS, CRNP's NPI is 1831751130 with credentials CRNP. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology