2026 NPPES data Neurology Physician NPI 1790362390 MD
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SIGMUND LILIAN, MD

Neurology Physician in GLEN BURNIE, Maryland. 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
32
Medicare Part D claims · 15 beneficiaries · Neurology Physician avg: 1K
What the federal data reveals: SIGMUND LILIAN, MD is a Neurology Physician ([object Object]) practicing in GLEN BURNIE, Maryland with a Medicare Part D prescribing footprint of 32 claims across 15 beneficiaries .

What the federal data shows

SIGMUND LILIAN, MD filed 32 Medicare Part D claims in 2023 as a Neurology Physician in GLEN BURNIE, Maryland.

32
Part D claims, 2023
Likely
board-certified (heuristic)

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.

Board certification likely (heuristic — not verified)

SIGMUND LILIAN, 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).

SIGMUND LILIAN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 03/28/2021

NPI 1790362390

Primary specialty

Neurology Physician

Mid-sized

19,866 US NPIs in this specialty

Medicare Part D claims

32 98% vs specialty avg

2023 prescription claims

Specialty avg: 1,309

Specialty distribution in Maryland

How Neurology Physician compares to other specialties among Maryland providers

Maryland providers

Neurology Physician share within Maryland

1. Neurology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Neurology Physician share within Maryland

Specialty board-certification context

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

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

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

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

SIGMUND LILIAN, MD is a Neurology Physician provider practicing in GLEN BURNIE, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1790362390. 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.

SIGMUND LILIAN, MD appears in the CMS NPPES registry as a Neurology Physician provider holding MD credentials at 301 HOSPITAL DR, GLEN BURNIE, MD, 21061, with a listed phone of (410) 787-4000. NPI 1790362390 was issued on 03/28/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LILIAN 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 32 prescription claims written by this provider, covering 15 Medicare beneficiaries and totaling roughly $5K 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.

Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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

301 HOSPITAL DR
GLEN BURNIE, MD 21061

Provider Details

NPI 1790362390
Specialty Neurology Physician
Credentials MD
Gender Male
NPI Issued 03/28/2021

Hospital and facility affiliations

Facilities where SIGMUND LILIAN, 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.

UNIVERSITY OF MARYLAND COMMUNITY MEDICAL GROUP INC
GLEN BURNIE, MD

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

Medicare Part D Prescribing Data

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

32
Total Claims
$5K
Total Drug Cost
15
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
40
Total Day Supply
984
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
61.1 years
Avg HCC Risk Score
3.13

Neurology Physician Overview

How SIGMUND LILIAN, MD fits within the Neurology Physician landscape nationally.

19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider

SIGMUND LILIAN, MD's 32 claims are below the specialty average of 1,309.

Nearby Neurology Physician Providers in Maryland

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

Compare Neurology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SIGMUND LILIAN, MD's specialty?
SIGMUND LILIAN, MD specializes in Neurology Physician and practices in GLEN BURNIE, Maryland. Credentials: MD.
How much does SIGMUND LILIAN, MD prescribe under Medicare Part D?
In 2023, SIGMUND LILIAN, MD wrote 32 Medicare Part D claims totaling $5K in drug costs for 15 beneficiaries.
Where is SIGMUND LILIAN, MD located?
SIGMUND LILIAN, MD is located at 301 HOSPITAL DR, GLEN BURNIE, MD, 21061. Phone: (410) 787-4000.
What is SIGMUND LILIAN, MD's NPI number?
SIGMUND LILIAN, MD's National Provider Identifier (NPI) is 1790362390, issued on 03/28/2021.
How many Neurology Physician providers are there in the US?
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
Does SIGMUND LILIAN, MD accept Medicare?
SIGMUND LILIAN, MD appears in CMS Medicare data with 32 Part D claims and 15 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SIGMUND LILIAN, MD's credentials?
SIGMUND LILIAN, MD's NPI is 1790362390 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