2026 NPPES data Neurology Physician NPI 1407967037 MD
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ROBERT GREENWOOD, MD

Neurology Physician in CHAPEL HILL, North Carolina. 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
197
Medicare Part D claims · 21 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: ROBERT GREENWOOD, MD is a Neurology Physician ([object Object]) practicing in CHAPEL HILL, North Carolina with a Medicare Part D prescribing footprint of 197 claims across 21 beneficiaries — 17% brand-name prescribing .

What stands out: ROBERT GREENWOOD, MD filed 197 Medicare Part D claims in 2023 across CHAPEL HILL, North Carolina. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

ROBERT GREENWOOD, MD 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).

ROBERT GREENWOOD, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 08/31/2006

NPI 1407967037

Primary specialty

Neurology Physician

Mid-sized

19,866 US NPIs in this specialty

Medicare Part D claims

197 85% vs specialty avg

2023 prescription claims

Specialty avg: 1,309

Specialty distribution in North Carolina

How Neurology Physician compares to other specialties among North Carolina providers

North Carolina providers

Neurology Physician share within North Carolina

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

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).

ROBERT GREENWOOD, MD is a Neurology Physician provider practicing in CHAPEL HILL, North Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1407967037. 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.

ROBERT GREENWOOD, MD appears in the CMS NPPES registry as a Neurology Physician provider holding MD credentials at 101 MANNING DR, CHAPEL HILL, NC, 27514, with a listed phone of (919) 966-4131. NPI 1407967037 was issued on 08/31/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GREENWOOD 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 197 prescription claims written by this provider, covering 21 Medicare beneficiaries and totaling roughly $160K in drug spend, split 17% brand-name and 83% 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.

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

101 MANNING DR
CHAPEL HILL, NC 27514

Provider Details

NPI 1407967037
Specialty Neurology Physician
Credentials MD
Gender Male
NPI Issued 08/31/2006

Brand vs generic prescribing mix · Typical

ROBERT GREENWOOD, MD — brand share 17.0%
Specialty average (est.)

17% brand-name claims vs 83% generic, on 197 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.

197
Total Claims
$160K
Total Drug Cost
21
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
323
Total Day Supply
9,193
Brand vs Generic
17% brand / 83% generic
Brand Drug Cost
$152K
Generic Drug Cost
$8K

Patient Demographics

Average Patient Age
46.1 years
Avg HCC Risk Score
1.40

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levocarnitine
34
Gabapentin
32
Acetazolamide
13
Fluconazole
13

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

Neurology Physician Overview

How ROBERT GREENWOOD, 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

ROBERT GREENWOOD, MD's 197 claims are below the specialty average of 1,309.

Nearby Neurology Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as GREENWOOD.

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

Frequently Asked Questions

What is ROBERT GREENWOOD, MD's specialty?
ROBERT GREENWOOD, MD specializes in Neurology Physician and practices in CHAPEL HILL, North Carolina. Credentials: MD.
How much does ROBERT GREENWOOD, MD prescribe under Medicare Part D?
In 2023, ROBERT GREENWOOD, MD wrote 197 Medicare Part D claims totaling $160K in drug costs for 21 beneficiaries.
Where is ROBERT GREENWOOD, MD located?
ROBERT GREENWOOD, MD is located at 101 MANNING DR, CHAPEL HILL, NC, 27514. Phone: (919) 966-4131.
What is ROBERT GREENWOOD, MD's NPI number?
ROBERT GREENWOOD, MD's National Provider Identifier (NPI) is 1407967037, issued on 08/31/2006.
Does ROBERT GREENWOOD, MD prescribe more brand-name or generic drugs?
ROBERT GREENWOOD, MD's prescribing is 17% brand-name and 83% generic drugs by claim count, with $152K in brand drug costs.
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.
What drugs does ROBERT GREENWOOD, MD prescribe most often?
Based on 2023 Medicare Part D data, ROBERT GREENWOOD, MD's most frequently prescribed drugs include Levocarnitine, Gabapentin, Acetazolamide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT GREENWOOD, MD accept Medicare?
ROBERT GREENWOOD, MD appears in CMS Medicare data with 197 Part D claims and 21 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT GREENWOOD, MD's credentials?
ROBERT GREENWOOD, MD's NPI is 1407967037 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