2026 NPPES data Internal Medicine Physician NPI 1134297450 MD
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Nirmaladevi Jayanthan, MD

Internal Medicine Physician in Waldorf, Maryland. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in 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
9K
Medicare Part D claims · 458 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
85%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Nirmaladevi Jayanthan, MD filed 8,878 Medicare Part D claims in 2023 as a Internal Medicine Physician in Waldorf, Maryland, prescribing 85% generic.

9K
Part D claims, 2023
85%
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.

Nirmaladevi Jayanthan, MD's Medicare Part D volume vs every U.S. prescriber

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

8,878 Top 2% higher than 98% 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. 2K+: 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-eligible specialty (heuristic, not verified)

Nirmaladevi Jayanthan, 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).

What does the federal data show about Nirmaladevi Jayanthan, MD?

Quality data not reported

NPI registry status

Active

Issued 12/04/2006

NPI 1134297450

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

8,878 227% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Maryland

How Internal Medicine Physician compares to other specialties among Maryland providers

Maryland providers

Largest specialties in Maryland (% of in-state providers)

Behavior Technician - 14.1%Behavior Technician14.1%Clinical Social Worker - 5.5%Clinical Social Worker5.5%Student in an Organized Health Care Education/Training Program - 4.5%Student in an Organized Health Care Education/Training Program4.5%Home Health Aide - 4.4%Home Health Aide4.4%Physical Therapist - 3.9%Physical Therapist3.9%Pharmacist - 3.6%Pharmacist3.6%Internal Medicine Physician - 2.8%Internal Medicine Physician2.8%
Largest specialties in Maryland (% of in-state 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 Internal Medicine Physician. Verify directly:

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).

Nirmaladevi Jayanthan, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 3328 OLD WASHINGTON RD, Waldorf, MD, 20602, with a listed phone of (301) 932-4954. NPI 1134297450 was issued on 12/04/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Jayanthan 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 8,878 prescription claims written by this provider, covering 458 Medicare beneficiaries and totaling roughly $1.1 million in drug spend, split 14% brand-name and 85% generic by claim count, with an opioid prescribing rate of 2.6%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

3328 OLD WASHINGTON RD
Waldorf, MD 20602

Provider Details

NPI 1134297450
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 12/04/2006

Brand vs generic prescribing mix · Typical

Nirmaladevi Jayanthan, MD - brand share 14.0%
Internal Medicine Physician average

14% brand-name claims vs 85% generic, on 8,878 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.

8,878
Total Claims
$1.1M
Total Drug Cost
458
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
16,350
Total Day Supply
474,765
Brand vs Generic
14% brand / 85% generic
Brand Drug Cost
$916K
Generic Drug Cost
$147K
Opioid Claims
234 (2.6% rate)
Antibiotic Claims
194

Patient Demographics

Average Patient Age
69.2 years
Avg HCC Risk Score
1.25
Gender Split
65% female / 35% male
Age Distribution
<65: 107, 65-74: 206, 75-84: 110, 85+: 35

Top Prescribed Drugs (Medicare Part D)

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

What Nirmaladevi Jayanthan, 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
Atorvastatin Calcium
558
Amlodipine Besylate
476
Metoprolol Succinate
372
Losartan Potassium
315
Lisinopril
308
Metformin Hcl
235
Furosemide
212
Levothyroxine Sodium
199
Gabapentin
194
Omeprazole
167

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

Internal Medicine Physician Overview

How Nirmaladevi Jayanthan, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

Nirmaladevi Jayanthan, MD's 8,878 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Maryland

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Maryland medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Nirmaladevi Jayanthan, MD's specialty?
Nirmaladevi Jayanthan, MD specializes in Internal Medicine Physician and practices in Waldorf, Maryland. Credentials: MD.
How much does Nirmaladevi Jayanthan, MD prescribe under Medicare Part D?
In 2023, Nirmaladevi Jayanthan, MD wrote 8,878 Medicare Part D claims totaling $1.1M in drug costs for 458 beneficiaries.
Where is Nirmaladevi Jayanthan, MD located?
Nirmaladevi Jayanthan, MD is located at 3328 OLD WASHINGTON RD, Waldorf, MD, 20602. Phone: (301) 932-4954.
What is Nirmaladevi Jayanthan, MD's NPI number?
Nirmaladevi Jayanthan, MD's National Provider Identifier (NPI) is 1134297450, issued on 12/04/2006.
Does Nirmaladevi Jayanthan, MD prescribe more brand-name or generic drugs?
Nirmaladevi Jayanthan, MD's prescribing is 14% brand-name and 85% generic drugs by claim count, with $916K in brand drug costs.
Does Nirmaladevi Jayanthan, MD prescribe opioids?
Yes, Nirmaladevi Jayanthan, MD had 234 opioid claims in 2023 with an opioid prescribing rate of 2.6%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Nirmaladevi Jayanthan, MD prescribe most often?
Based on 2023 Medicare Part D data, Nirmaladevi Jayanthan, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nirmaladevi Jayanthan, MD accept Medicare?
Nirmaladevi Jayanthan, MD appears in CMS Medicare data with 8,878 Part D claims and 458 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nirmaladevi Jayanthan, MD's credentials?
Nirmaladevi Jayanthan, MD's NPI is 1134297450 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

Compiled from official public sources by the PlainDoctor editorial team.