2026 NPPES data Neurology Physician NPI 1518930486 MD
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SHASHIDHARA NANJUNDASWAMY, MD

Neurology Physician in WORCESTER, Massachusetts. 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
2K
Medicare Part D claims · 512 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

SHASHIDHARA NANJUNDASWAMY, MD filed 2,220 Medicare Part D claims in 2023 as a Neurology Physician in WORCESTER, Massachusetts, prescribing 94% generic.

2K
Part D claims, 2023
94%
generic prescribing
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.

SHASHIDHARA NANJUNDASWAMY, MD's Medicare Part D volume vs every U.S. prescriber

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

2,220 Top 15% higher than 85% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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

Board certification likely (heuristic — not verified)

SHASHIDHARA NANJUNDASWAMY, 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).

What does the federal data show about SHASHIDHARA NANJUNDASWAMY, MD?

Quality data not reported

NPI registry status

Active

Issued 02/09/2006

NPI 1518930486

Primary specialty

Neurology Physician

Mid-sized

19,866 US NPIs in this specialty

Medicare Part D claims

2,220 70% vs specialty avg

2023 prescription claims

Specialty avg: 1,309

Specialty distribution in Massachusetts

How Neurology Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Neurology Physician share within Massachusetts

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

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).

SHASHIDHARA NANJUNDASWAMY, MD appears in the CMS NPPES registry as a Neurology Physician provider holding MD credentials at 123 SUMMER ST, WORCESTER, MA, 01608, with a listed phone of (508) 368-3150. NPI 1518930486 was issued on 02/09/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NANJUNDASWAMY 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 2,220 prescription claims written by this provider, covering 512 Medicare beneficiaries and totaling roughly $648K in drug spend, split 6% brand-name and 94% 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

123 SUMMER ST
WORCESTER, MA 01608

Provider Details

NPI 1518930486
Specialty Neurology Physician
Credentials MD
Gender Male
NPI Issued 02/09/2006

Hospital and facility affiliations

Facilities where SHASHIDHARA NANJUNDASWAMY, 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.

RELIANT MEDICAL GROUP INC
WORCESTER, MA

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

License & disciplinary context — Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 — they are NOT specific to SHASHIDHARA NANJUNDASWAMY, MD. To verify SHASHIDHARA NANJUNDASWAMY, MD's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

SHASHIDHARA NANJUNDASWAMY, MD — brand share 6.0%
Specialty average (est.)

6% brand-name claims vs 94% generic, on 2,220 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.

2,220
Total Claims
$648K
Total Drug Cost
512
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,874
Total Day Supply
114,475
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$536K
Generic Drug Cost
$111K

Patient Demographics

Average Patient Age
69.4 years
Avg HCC Risk Score
1.86
Gender Split
60% female / 40% male
Age Distribution
<65: 149, 65-74: 168, 75-84: 132, 85+: 63

Top Prescribed Drugs (Medicare Part D)

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

What SHASHIDHARA NANJUNDASWAMY, MD 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
Levetiracetam
316
Memantine Hcl
277
Gabapentin
223
Baclofen
117
Donepezil Hcl
111
Topiramate
105
Oxcarbazepine
78
Primidone
74
Carbidopa-Levodopa
Carbidopa/Levodopa
72
Lamotrigine
67

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

Neurology Physician Overview

How SHASHIDHARA NANJUNDASWAMY, 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

SHASHIDHARA NANJUNDASWAMY, MD's 2,220 claims are above the specialty average of 1,309.

Nearby Neurology Physician Providers in Massachusetts

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

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

Frequently Asked Questions

What is SHASHIDHARA NANJUNDASWAMY, MD's specialty?
SHASHIDHARA NANJUNDASWAMY, MD specializes in Neurology Physician and practices in WORCESTER, Massachusetts. Credentials: MD.
How much does SHASHIDHARA NANJUNDASWAMY, MD prescribe under Medicare Part D?
In 2023, SHASHIDHARA NANJUNDASWAMY, MD wrote 2,220 Medicare Part D claims totaling $648K in drug costs for 512 beneficiaries.
Where is SHASHIDHARA NANJUNDASWAMY, MD located?
SHASHIDHARA NANJUNDASWAMY, MD is located at 123 SUMMER ST, WORCESTER, MA, 01608. Phone: (508) 368-3150.
What is SHASHIDHARA NANJUNDASWAMY, MD's NPI number?
SHASHIDHARA NANJUNDASWAMY, MD's National Provider Identifier (NPI) is 1518930486, issued on 02/09/2006.
Does SHASHIDHARA NANJUNDASWAMY, MD prescribe more brand-name or generic drugs?
SHASHIDHARA NANJUNDASWAMY, MD's prescribing is 6% brand-name and 94% generic drugs by claim count, with $536K 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 SHASHIDHARA NANJUNDASWAMY, MD prescribe most often?
Based on 2023 Medicare Part D data, SHASHIDHARA NANJUNDASWAMY, MD's most frequently prescribed drugs include Levetiracetam, Memantine Hcl, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SHASHIDHARA NANJUNDASWAMY, MD accept Medicare?
SHASHIDHARA NANJUNDASWAMY, MD appears in CMS Medicare data with 2,220 Part D claims and 512 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SHASHIDHARA NANJUNDASWAMY, MD's credentials?
SHASHIDHARA NANJUNDASWAMY, MD's NPI is 1518930486 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