2026 NPPES data Adult Medicine Physician NPI 1508878414 MD
Verify on CMS →

ACHANKUNJU CHACKO, MD

Adult Medicine Physician in TAKOMA PARK, 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
2K
Medicare Part D claims · 115 beneficiaries · Adult Medicine Physician avg: 3K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$296.63
14 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ACHANKUNJU CHACKO, MD is a Adult Medicine Physician ([object Object]) practicing in TAKOMA PARK, Maryland with a Medicare Part D prescribing footprint of 2K claims across 115 beneficiaries — 14% brand-name prescribing . Industry payments of $296.63 across 14 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ACHANKUNJU CHACKO, MD filed 2,151 Medicare Part D claims in 2023 across TAKOMA PARK, Maryland. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

ACHANKUNJU CHACKO, 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).

ACHANKUNJU CHACKO, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 08/12/2006

NPI 1508878414

Primary specialty

Adult Medicine Physician

Niche

2,481 US NPIs in this specialty

Medicare Part D claims

2,151 23% vs specialty avg

2023 prescription claims

Specialty avg: 2,807

Specialty distribution in Maryland

How Adult Medicine Physician compares to other specialties among Maryland providers

Maryland providers

Adult Medicine Physician share within Maryland

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

Specialty board-certification context

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

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

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

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

ACHANKUNJU CHACKO, MD is a Adult Medicine Physician provider practicing in TAKOMA PARK, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1508878414. 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.

ACHANKUNJU CHACKO, MD appears in the CMS NPPES registry as a Adult Medicine Physician provider holding MD credentials at 7610 CARROLL AVE, TAKOMA PARK, MD, 20912, with a listed phone of (301) 270-5522. NPI 1508878414 was issued on 08/12/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHACKO 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 2,151 prescription claims written by this provider, covering 115 Medicare beneficiaries and totaling roughly $282K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 3.9%. 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.

Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 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

7610 CARROLL AVE
TAKOMA PARK, MD 20912

Provider Details

NPI 1508878414
Specialty Adult Medicine Physician
Credentials MD
Gender Male
NPI Issued 08/12/2006

Hospital and facility affiliations

Facilities where ACHANKUNJU CHACKO, 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.

SUN RISE REHAB LLC
GREENBELT, 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).

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 ACHANKUNJU CHACKO, MD. Source: openpaymentsdata.cms.gov.

Total received

$297

Largest payer

AstraZeneca Pharmaceuticals LP

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 · Typical

ACHANKUNJU CHACKO, MD — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 2,151 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.

2,151
Total Claims
$282K
Total Drug Cost
115
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,922
Total Day Supply
112,175
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$237K
Generic Drug Cost
$41K
Opioid Claims
83 (3.9% rate)
Antibiotic Claims
35

Patient Demographics

Average Patient Age
73.2 years
Avg HCC Risk Score
1.21
Gender Split
48% female / 52% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
216
Amlodipine Besylate
134
Metformin Hcl
86
Lisinopril
68
Diclofenac Sodium
53
Acetaminophen-Codeine
Acetaminophen With Codeine
52
Hydrochlorothiazide
50
Losartan Potassium
50
Gabapentin
48
Tamsulosin Hcl
44

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

Adult Medicine Physician Overview

How ACHANKUNJU CHACKO, MD fits within the Adult Medicine Physician landscape nationally.

2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider

ACHANKUNJU CHACKO, MD's 2,151 claims are below the specialty average of 2,807.

Nearby Adult Medicine Physician Providers in Maryland

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

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

Frequently Asked Questions

What is ACHANKUNJU CHACKO, MD's specialty?
ACHANKUNJU CHACKO, MD specializes in Adult Medicine Physician and practices in TAKOMA PARK, Maryland. Credentials: MD.
How much does ACHANKUNJU CHACKO, MD prescribe under Medicare Part D?
In 2023, ACHANKUNJU CHACKO, MD wrote 2,151 Medicare Part D claims totaling $282K in drug costs for 115 beneficiaries.
Where is ACHANKUNJU CHACKO, MD located?
ACHANKUNJU CHACKO, MD is located at 7610 CARROLL AVE, TAKOMA PARK, MD, 20912. Phone: (301) 270-5522.
What is ACHANKUNJU CHACKO, MD's NPI number?
ACHANKUNJU CHACKO, MD's National Provider Identifier (NPI) is 1508878414, issued on 08/12/2006.
Does ACHANKUNJU CHACKO, MD prescribe more brand-name or generic drugs?
ACHANKUNJU CHACKO, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $237K in brand drug costs.
Does ACHANKUNJU CHACKO, MD prescribe opioids?
Yes, ACHANKUNJU CHACKO, MD had 83 opioid claims in 2023 with an opioid prescribing rate of 3.9%.
How many Adult Medicine Physician providers are there in the US?
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
What drugs does ACHANKUNJU CHACKO, MD prescribe most often?
Based on 2023 Medicare Part D data, ACHANKUNJU CHACKO, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ACHANKUNJU CHACKO, MD accept Medicare?
ACHANKUNJU CHACKO, MD appears in CMS Medicare data with 2,151 Part D claims and 115 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ACHANKUNJU CHACKO, MD's credentials?
ACHANKUNJU CHACKO, MD's NPI is 1508878414 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