NPI registry status
Active
2026 NPPES data Addiction Medicine (Internal Medicine) Physician NPI 1760683551 M.D.
Verify on CMS → Gerald Sullivan, M.D.
Addiction Medicine (Internal Medicine) Physician in Milwaukee, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 553 in Addiction Medicine (Internal Medicine) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
6K
Medicare Part D claims · 202 beneficiaries · Addiction Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Gerald Sullivan, M.D. filed 6,071 Medicare Part D claims in 2023 as an Addiction Medicine (Internal Medicine) Physician in Milwaukee, Wisconsin, prescribing 94% generic.
- 6K
- Part D claims, 2023
- 94%
- generic prescribing
- ≥95th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Gerald Sullivan, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1760683551), first enumerated 05/30/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 6,071 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1760683551 · Addiction Medicine (Internal Medicine) Physician
NPI-10 · ENUM-MID · TAX-NARROW · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1760683551
- ENUM-MID 2007
- TAX-NARROW 553
- RX-MID 6,071
- BOOK-THIN 17 in Wisconsin
- PHOTO-ENUM William Swafford · 2007
Gerald Sullivan, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
6,071 ≥ 95th percentile 95% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Gerald Sullivan, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Gerald Sullivan, M.D.?
Quality data not reportedPrimary specialty
Addiction Medicine (Internal Medicine) Physician
Medicare Part D claims
6,071 333% vs specialty avg
Specialty distribution in Wisconsin
How Addiction Medicine (Internal Medicine) Physician compares to other specialties among Wisconsin providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Addiction Medicine (Internal Medicine) Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1760683551 |
|---|---|
| Specialty | Addiction Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/30/2007 |
Brand vs generic prescribing mix · Generic-heavy
Gerald Sullivan, M.D. - brand share 6.0%
Addiction Medicine (Internal Medicine) Physician average
6% brand-name claims vs 94% generic, on 6,071 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.
6,071
Total Claims
$374K
Total Drug Cost
202
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 6,440
- Total Day Supply
- 169,197
- Brand vs Generic
- 6% brand / 94% generic
- Brand Drug Cost
- $215K
- Generic Drug Cost
- $159K
- Antibiotic Claims
- 50
Patient Demographics
- Average Patient Age
- 54.9 years
- Avg HCC Risk Score
- 1.82
- Gender Split
- 43% female / 57% male
- Age Distribution
- <65: 121, 65-74: 68, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gerald Sullivan, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Olanzapine
Olanzapine
346 claims
- Trazodone Hcl
Trazodone Hcl
328 claims
- Gabapentin
Gabapentin
321 claims
- Topiramate
Topiramate
298 claims
- Quetiapine Fumarate
Quetiapine Fumarate
284 claims
- Risperidone
Risperidone
253 claims
- Lamotrigine
Lamotrigine
238 claims
- Divalproex Sodium
Divalproex Sodium
179 claims
| Drug | Claims |
|---|---|
| Olanzapine | 346 |
| Trazodone Hcl | 328 |
| Gabapentin | 321 |
| Topiramate | 298 |
| Quetiapine Fumarate | 284 |
| Risperidone | 253 |
| Lamotrigine | 238 |
| Divalproex Sodium | 179 |
| Metoprolol Succinate | 172 |
| Atorvastatin Calcium | 169 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Addiction Medicine (Internal Medicine) Physician in WI →
All providers in Wisconsin →
Compare specialties →
Addiction Medicine (Internal Medicine) Physician Overview
How Gerald Sullivan, M.D. fits within the Addiction Medicine (Internal Medicine) Physician landscape nationally.
553
Addiction Medicine (Internal Medicine) Physician Providers in US
46
States with Addiction Medicine (Internal Medicine) Physician
1,403
Avg Claims per Provider
Gerald Sullivan, M.D.'s 6,071 claims are above the specialty average of 1,403.
Nationwide Addiction Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Sullivan, both outside Wisconsin so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Addiction Medicine (Internal Medicine) Physician Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Sullivan.
One of 17 Addiction Medicine (Internal Medicine) Physician providers enrolled in Wisconsin, 5 are shown here.
Frequently Asked Questions
What is Gerald Sullivan, M.D.'s specialty? ▼
Gerald Sullivan, M.D. specializes in Addiction Medicine (Internal Medicine) Physician and practices in Milwaukee, Wisconsin. Credentials: M.D..
How much does Gerald Sullivan, M.D. prescribe under Medicare Part D? ▼
In 2023, Gerald Sullivan, M.D. wrote 6,071 Medicare Part D claims totaling $374K in drug costs for 202 beneficiaries.
Where is Gerald Sullivan, M.D. located? ▼
Gerald Sullivan, M.D. is located at 6040 W LISBON AVE, Milwaukee, WI, 53210. Phone: (414) 447-9890.
What is Gerald Sullivan, M.D.'s NPI number? ▼
Gerald Sullivan, M.D.'s National Provider Identifier (NPI) is 1760683551, issued on 05/30/2007.
Does Gerald Sullivan, M.D. prescribe more brand-name or generic drugs? ▼
Gerald Sullivan, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $215K in brand drug costs.
How many Addiction Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 553 Addiction Medicine (Internal Medicine) Physician providers across 46 states in the US. The average Addiction Medicine (Internal Medicine) Physician provider writes 1,403 Medicare Part D claims per year.
What drugs does Gerald Sullivan, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Gerald Sullivan, M.D.'s most frequently prescribed drugs include Olanzapine, Trazodone Hcl, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gerald Sullivan, M.D. accept Medicare? ▼
Gerald Sullivan, M.D. appears in CMS Medicare data with 6,071 Part D claims and 202 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gerald Sullivan, M.D.'s credentials? ▼
Gerald Sullivan, M.D.'s NPI is 1760683551 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
View source datasets and methodology notes
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.