2026 NPPES data Specialist NPI 1386768836 M.D.
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ADAM ROMEISER, M.D.

Specialist in LAKE FOREST, Illinois. 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
57
Medicare Part D claims · Specialist avg: 1K
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ADAM ROMEISER, M.D. filed 57 Medicare Part D claims in 2023 as a Specialist in LAKE FOREST, Illinois, prescribing 74% generic.

57
Part D claims, 2023
74%
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.

ADAM ROMEISER, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

57 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 ADAM ROMEISER, M.D.?

Quality data not reported

NPI registry status

Active

Issued 03/19/2007

NPI 1386768836

Primary specialty

Specialist

High-volume

69,658 US NPIs in this specialty

Medicare Part D claims

57 96% vs specialty avg

2023 prescription claims

Specialty avg: 1,474

Specialty distribution in Illinois

How Specialist compares to other specialties among Illinois providers

Illinois providers

Specialist share within Illinois

1. Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Specialist share within Illinois

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (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).

ADAM ROMEISER, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at 294 ROSE TER, LAKE FOREST, IL, 60045, with a listed phone of (847) 234-4056. NPI 1386768836 was issued on 03/19/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ROMEISER 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 57 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $4K in drug spend, split 26% brand-name and 74% 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.

Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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

294 ROSE TER
LAKE FOREST, IL 60045

Provider Details

NPI 1386768836
Specialty Specialist
Credentials M.D.
Gender Male
NPI Issued 03/19/2007

License & disciplinary context — Illinois IDFPR 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 — they are NOT specific to ADAM ROMEISER, M.D.. To verify ADAM ROMEISER, M.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases

IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

ADAM ROMEISER, M.D. — brand share 26.0%
Specialty average (est.)

26% brand-name claims vs 74% generic, on 57 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.

57
Total Claims
$4K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
57
Total Day Supply
1,450
Brand vs Generic
26% brand / 74% generic
Brand Drug Cost
$4K
Generic Drug Cost
$481

Patient Demographics

Average Patient Age
84.0 years
Avg HCC Risk Score
4.71

Top Prescribed Drugs (Medicare Part D)

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

What ADAM ROMEISER, M.D. 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
Mirtazapine
18
Eliquis
Apixaban
13
Escitalopram Oxalate
12

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

Specialist Overview

How ADAM ROMEISER, M.D. fits within the Specialist landscape nationally.

69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider

ADAM ROMEISER, M.D.'s 57 claims are below the specialty average of 1,474.

Nearby Specialist Providers in Illinois

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

Compare Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is ADAM ROMEISER, M.D.'s specialty?
ADAM ROMEISER, M.D. specializes in Specialist and practices in LAKE FOREST, Illinois. Credentials: M.D..
How much does ADAM ROMEISER, M.D. prescribe under Medicare Part D?
In 2023, ADAM ROMEISER, M.D. wrote 57 Medicare Part D claims totaling $4K in drug costs for N/A beneficiaries.
Where is ADAM ROMEISER, M.D. located?
ADAM ROMEISER, M.D. is located at 294 ROSE TER, LAKE FOREST, IL, 60045. Phone: (847) 234-4056.
What is ADAM ROMEISER, M.D.'s NPI number?
ADAM ROMEISER, M.D.'s National Provider Identifier (NPI) is 1386768836, issued on 03/19/2007.
Does ADAM ROMEISER, M.D. prescribe more brand-name or generic drugs?
ADAM ROMEISER, M.D.'s prescribing is 26% brand-name and 74% generic drugs by claim count, with $4K in brand drug costs.
How many Specialist providers are there in the US?
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does ADAM ROMEISER, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ADAM ROMEISER, M.D.'s most frequently prescribed drugs include Mirtazapine, Eliquis, Escitalopram Oxalate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ADAM ROMEISER, M.D. accept Medicare?
ADAM ROMEISER, M.D. appears in CMS Medicare data with 57 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ADAM ROMEISER, M.D.'s credentials?
ADAM ROMEISER, M.D.'s NPI is 1386768836 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