2026 NPPES data Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist NPI 1184019101 M.D.
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DARIN WILLIAMS, M.D.

Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in ATLANTA, Georgia. 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
81
Medicare Part D claims · 49 beneficiaries · Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist avg: 256
Industry payments
$58.14
3 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

DARIN WILLIAMS, M.D. filed 81 Medicare Part D claims in 2023 as a Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in ATLANTA, Georgia.

81
Part D claims, 2023
$58.14
industry payments (Sunshine Act)

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.

DARIN WILLIAMS, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

81 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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 DARIN WILLIAMS, M.D.?

Quality data not reported

NPI registry status

Active

Issued 04/06/2015

NPI 1184019101

Primary specialty

Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist

Mid-sized

12,377 US NPIs in this specialty

Medicare Part D claims

81 68% vs specialty avg

2023 prescription claims

Specialty avg: 256

Specialty distribution in Georgia

How Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist compares to other specialties among Georgia providers

Georgia providers

Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist share within Georgia

1. Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist share within Georgia

Specialty board-certification context

Estimated specialty board-certified rate — Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist ABMS/AOA estimate

Est. board-certified rate (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist) — 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).

DARIN WILLIAMS, M.D. appears in the CMS NPPES registry as a Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist provider holding M.D. credentials at 1364 CLIFTON RD NE, ATLANTA, GA, 30322, with a listed phone of (770) 315-9527. NPI 1184019101 was issued on 04/06/2015. 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 81 prescription claims written by this provider, covering 49 Medicare beneficiaries and totaling roughly $7K in drug spend. 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.

Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist is a mid-sized specialty nationwide, with 12,377 enrolled providers across 55 states and an average of 256 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

1364 CLIFTON RD NE
ATLANTA, GA 30322

Provider Details

NPI 1184019101
Specialty Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist
Credentials M.D.
Gender Male
NPI Issued 04/06/2015

Hospital and facility affiliations

Facilities where DARIN WILLIAMS, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

NORTHSIDE EMERGENCY ASSOCIATES, P.C.
CANTON, GA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for DARIN WILLIAMS, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$58

Largest payer

ABBVIE INC.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Medicare Part D Prescribing Data

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

81
Total Claims
$7K
Total Drug Cost
49
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
106
Total Day Supply
1,783
Generic Drug Cost
$722
Antibiotic Claims
14

Patient Demographics

Average Patient Age
64.3 years
Avg HCC Risk Score
1.89
Gender Split
65% female / 35% male
Age Distribution
<65: 20, 65-74: 18, 75-84: N/A, 85+: N/A

Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Overview

How DARIN WILLIAMS, M.D. fits within the Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist landscape nationally.

12,377
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Providers in US
55
States with Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist
256
Avg Claims per Provider

DARIN WILLIAMS, M.D.'s 81 claims are below the specialty average of 256.

Nearby Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Providers in Georgia

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

Compare Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is DARIN WILLIAMS, M.D.'s specialty?
DARIN WILLIAMS, M.D. specializes in Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist and practices in ATLANTA, Georgia. Credentials: M.D..
How much does DARIN WILLIAMS, M.D. prescribe under Medicare Part D?
In 2023, DARIN WILLIAMS, M.D. wrote 81 Medicare Part D claims totaling $7K in drug costs for 49 beneficiaries.
Where is DARIN WILLIAMS, M.D. located?
DARIN WILLIAMS, M.D. is located at 1364 CLIFTON RD NE, ATLANTA, GA, 30322. Phone: (770) 315-9527.
What is DARIN WILLIAMS, M.D.'s NPI number?
DARIN WILLIAMS, M.D.'s National Provider Identifier (NPI) is 1184019101, issued on 04/06/2015.
How many Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist providers are there in the US?
There are 12,377 Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist providers across 55 states in the US. The average Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist provider writes 256 Medicare Part D claims per year.
Does DARIN WILLIAMS, M.D. accept Medicare?
DARIN WILLIAMS, M.D. appears in CMS Medicare data with 81 Part D claims and 49 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DARIN WILLIAMS, M.D.'s credentials?
DARIN WILLIAMS, M.D.'s NPI is 1184019101 with credentials M.D.. 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