2026 NPPES data Interventional Pain Medicine Physician NPI 1992138366 MD
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WILLIAM SMISSON, MD

Interventional Pain Medicine Physician in MACON, 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
595
Medicare Part D claims · 79 beneficiaries · Interventional Pain Medicine Physician avg: 2K
Industry payments
$489.78
7 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: WILLIAM SMISSON, MD is a Interventional Pain Medicine Physician ([object Object]) practicing in MACON, Georgia with a Medicare Part D prescribing footprint of 595 claims across 79 beneficiaries . Industry payments of $489.78 across 7 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: WILLIAM SMISSON, MD filed 595 Medicare Part D claims in 2023 across MACON, Georgia. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

WILLIAM SMISSON, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

WILLIAM SMISSON, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 08/20/2013

NPI 1992138366

Primary specialty

Interventional Pain Medicine Physician

Niche

1,528 US NPIs in this specialty

Medicare Part D claims

595 73% vs specialty avg

2023 prescription claims

Specialty avg: 2,197

Specialty distribution in Georgia

How Interventional Pain Medicine Physician compares to other specialties among Georgia providers

Georgia providers

Interventional Pain Medicine Physician share within Georgia

1. Interventional Pain Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Interventional Pain Medicine Physician share within Georgia

Specialty board-certification context

Estimated specialty board-certified rate — Interventional Pain Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Interventional Pain Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Interventional Pain Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Interventional Pain Medicine Physician) — 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).

WILLIAM SMISSON, MD is a Interventional Pain Medicine Physician provider practicing in MACON, Georgia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1992138366. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

WILLIAM SMISSON, MD appears in the CMS NPPES registry as a Interventional Pain Medicine Physician provider holding MD credentials at 1157 FORSYTH ST STE 200, MACON, GA, 31201, with a listed phone of (478) 476-1968. NPI 1992138366 was issued on 08/20/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SMISSON 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 595 prescription claims written by this provider, covering 79 Medicare beneficiaries and totaling roughly $32K in drug spend, with an opioid prescribing rate of 2.2%. 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.

Interventional Pain Medicine Physician is a narrow specialty nationwide, with 1,528 enrolled providers across 53 states and an average of 2,197 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

1157 FORSYTH ST STE 200
MACON, GA 31201

Provider Details

NPI 1992138366
Specialty Interventional Pain Medicine Physician
Credentials MD
Gender Male
NPI Issued 08/20/2013

Hospital and facility affiliations

Facilities where WILLIAM SMISSON, MD 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.

AMERICAN ANESTHESIOLOGY ASSOCIATES OF GEORGIA LLC
MACON, 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 WILLIAM SMISSON, MD. Source: openpaymentsdata.cms.gov.

Total received

$490

Largest payer

Boston Scientific Corporation

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.

595
Total Claims
$32K
Total Drug Cost
79
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
657
Total Day Supply
14,182
Generic Drug Cost
$7K
Opioid Claims
13 (2.2% rate)
Antibiotic Claims
34

Patient Demographics

Average Patient Age
75.3 years
Avg HCC Risk Score
2.83
Gender Split
66% female / 34% male
Age Distribution
<65: 12, 65-74: 22, 75-84: 31, 85+: 14

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Quetiapine Fumarate
23
Levothyroxine Sodium
21
Metoprolol Tartrate
20
Gabapentin
19
Pantoprazole Sodium
18
Potassium Chloride
17
Prednisone
17
Metoprolol Succinate
15
Donepezil Hcl
13
Oxybutynin Chloride Er
Oxybutynin Chloride
13

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

Interventional Pain Medicine Physician Overview

How WILLIAM SMISSON, MD fits within the Interventional Pain Medicine Physician landscape nationally.

1,528
Interventional Pain Medicine Physician Providers in US
53
States with Interventional Pain Medicine Physician
2,197
Avg Claims per Provider

WILLIAM SMISSON, MD's 595 claims are below the specialty average of 2,197.

Nearby Interventional Pain Medicine Physician Providers in Georgia

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

Compare Interventional Pain Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM SMISSON, MD's specialty?
WILLIAM SMISSON, MD specializes in Interventional Pain Medicine Physician and practices in MACON, Georgia. Credentials: MD.
How much does WILLIAM SMISSON, MD prescribe under Medicare Part D?
In 2023, WILLIAM SMISSON, MD wrote 595 Medicare Part D claims totaling $32K in drug costs for 79 beneficiaries.
Where is WILLIAM SMISSON, MD located?
WILLIAM SMISSON, MD is located at 1157 FORSYTH ST STE 200, MACON, GA, 31201. Phone: (478) 476-1968.
What is WILLIAM SMISSON, MD's NPI number?
WILLIAM SMISSON, MD's National Provider Identifier (NPI) is 1992138366, issued on 08/20/2013.
Does WILLIAM SMISSON, MD prescribe opioids?
Yes, WILLIAM SMISSON, MD had 13 opioid claims in 2023 with an opioid prescribing rate of 2.2%.
How many Interventional Pain Medicine Physician providers are there in the US?
There are 1,528 Interventional Pain Medicine Physician providers across 53 states in the US. The average Interventional Pain Medicine Physician provider writes 2,197 Medicare Part D claims per year.
What drugs does WILLIAM SMISSON, MD prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM SMISSON, MD's most frequently prescribed drugs include Quetiapine Fumarate, Levothyroxine Sodium, Metoprolol Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM SMISSON, MD accept Medicare?
WILLIAM SMISSON, MD appears in CMS Medicare data with 595 Part D claims and 79 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM SMISSON, MD's credentials?
WILLIAM SMISSON, MD's NPI is 1992138366 with credentials MD. 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