2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1760747430 M.D
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KARTHIKEYAN VENKATACHALAM, M.D

Geriatric Medicine (Internal Medicine) Physician in FLOWOOD, Mississippi. 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
1K
Medicare Part D claims · 196 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
62%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.4K
48 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

KARTHIKEYAN VENKATACHALAM, M.D filed 1,124 Medicare Part D claims in 2023 as a Geriatric Medicine (Internal Medicine) Physician in FLOWOOD, Mississippi, prescribing 62% generic.

1K
Part D claims, 2023
62%
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.

KARTHIKEYAN VENKATACHALAM, M.D's Medicare Part D volume vs every U.S. prescriber

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

1,124 Top 23% higher than 77% 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%). This entry sits in this band. 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

Board certification likely (heuristic — not verified)

KARTHIKEYAN VENKATACHALAM, M.D 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 KARTHIKEYAN VENKATACHALAM, M.D?

Quality data not reported

NPI registry status

Active

Issued 07/09/2012

NPI 1760747430

Primary specialty

Geriatric Medicine (Internal Medicine) Physician

Niche

4,161 US NPIs in this specialty

Medicare Part D claims

1,124 75% vs specialty avg

2023 prescription claims

Specialty avg: 4,450

Specialty distribution in Mississippi

How Geriatric Medicine (Internal Medicine) Physician compares to other specialties among Mississippi providers

Mississippi providers

Geriatric Medicine (Internal Medicine) Physician share within Mississippi

1. Geriatric Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Geriatric Medicine (Internal Medicine) Physician share within Mississippi

Specialty board-certification context

Estimated specialty board-certified rate — Geriatric Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Geriatric Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Geriatric Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

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

KARTHIKEYAN VENKATACHALAM, M.D appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding M.D credentials at 102 RIVERVIEW DR STE A, FLOWOOD, MS, 39232, with a listed phone of (601) 981-1610. NPI 1760747430 was issued on 07/09/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what VENKATACHALAM 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 1,124 prescription claims written by this provider, covering 196 Medicare beneficiaries and totaling roughly $557K in drug spend, split 38% brand-name and 62% 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.

Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,161 enrolled providers across 52 states and an average of 4,450 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

102 RIVERVIEW DR STE A
FLOWOOD, MS 39232

Provider Details

NPI 1760747430
Specialty Geriatric Medicine (Internal Medicine) Physician
Credentials M.D
Gender Male
NPI Issued 07/09/2012

Hospital and facility affiliations

Facilities where KARTHIKEYAN VENKATACHALAM, M.D 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.

CENTRAL NEPHROLOGY CLINIC PLLC
FLOWOOD, MS

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

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for KARTHIKEYAN VENKATACHALAM, M.D. Source: openpaymentsdata.cms.gov.

Total received

$1.4K

Largest payer

Boehringer Ingelheim Pharmaceuticals, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Above average

KARTHIKEYAN VENKATACHALAM, M.D — brand share 38.0%
Specialty average (est.)

38% brand-name claims vs 62% generic, on 1,124 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.

1,124
Total Claims
$557K
Total Drug Cost
196
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,803
Total Day Supply
53,266
Brand vs Generic
38% brand / 62% generic
Brand Drug Cost
$526K
Generic Drug Cost
$31K
Antibiotic Claims
15

Patient Demographics

Average Patient Age
65.4 years
Avg HCC Risk Score
4.23
Gender Split
43% female / 57% male
Age Distribution
<65: 74, 65-74: 68, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What KARTHIKEYAN VENKATACHALAM, 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
Farxiga
Dapagliflozin Propanediol
89
Auryxia
Ferric Citrate
73
Sevelamer Carbonate
71
Jardiance
Empagliflozin
64
Calcitriol
57
Losartan Potassium
56
Amlodipine Besylate
55
Velphoro
Sucroferric Oxyhydroxide
52
Furosemide
41
Tamsulosin Hcl
33

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

Geriatric Medicine (Internal Medicine) Physician Overview

How KARTHIKEYAN VENKATACHALAM, M.D fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.

4,161
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider

KARTHIKEYAN VENKATACHALAM, M.D's 1,124 claims are below the specialty average of 4,450.

Nearby Geriatric Medicine (Internal Medicine) Physician Providers in Mississippi

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

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

Frequently Asked Questions

What is KARTHIKEYAN VENKATACHALAM, M.D's specialty?
KARTHIKEYAN VENKATACHALAM, M.D specializes in Geriatric Medicine (Internal Medicine) Physician and practices in FLOWOOD, Mississippi. Credentials: M.D.
How much does KARTHIKEYAN VENKATACHALAM, M.D prescribe under Medicare Part D?
In 2023, KARTHIKEYAN VENKATACHALAM, M.D wrote 1,124 Medicare Part D claims totaling $557K in drug costs for 196 beneficiaries.
Where is KARTHIKEYAN VENKATACHALAM, M.D located?
KARTHIKEYAN VENKATACHALAM, M.D is located at 102 RIVERVIEW DR STE A, FLOWOOD, MS, 39232. Phone: (601) 981-1610.
What is KARTHIKEYAN VENKATACHALAM, M.D's NPI number?
KARTHIKEYAN VENKATACHALAM, M.D's National Provider Identifier (NPI) is 1760747430, issued on 07/09/2012.
Does KARTHIKEYAN VENKATACHALAM, M.D prescribe more brand-name or generic drugs?
KARTHIKEYAN VENKATACHALAM, M.D's prescribing is 38% brand-name and 62% generic drugs by claim count, with $526K in brand drug costs.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US?
There are 4,161 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does KARTHIKEYAN VENKATACHALAM, M.D prescribe most often?
Based on 2023 Medicare Part D data, KARTHIKEYAN VENKATACHALAM, M.D's most frequently prescribed drugs include Farxiga, Auryxia, Sevelamer Carbonate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KARTHIKEYAN VENKATACHALAM, M.D accept Medicare?
KARTHIKEYAN VENKATACHALAM, M.D appears in CMS Medicare data with 1,124 Part D claims and 196 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KARTHIKEYAN VENKATACHALAM, M.D's credentials?
KARTHIKEYAN VENKATACHALAM, M.D's NPI is 1760747430 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