2026 NPPES data Hematology & Oncology Physician NPI 1558360446 M.D.
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ROBERT KLAFTER, M.D.

Hematology & Oncology Physician in STOCKBRIDGE, Georgia. 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
179
Medicare Part D claims · 60 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
98.5/100
▲ 15 pts above national avg 83.1 · [object Object]
Industry payments
$623.85
30 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ROBERT KLAFTER, M.D. is a Hematology & Oncology Physician ([object Object]) practicing in STOCKBRIDGE, Georgia with a Medicare Part D prescribing footprint of 179 claims across 60 beneficiaries — 14% brand-name prescribing . Their CMS MIPS Final Score of 98.5/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $623.85 across 30 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ROBERT KLAFTER, M.D. reported a CMS MIPS final score of 98.5 out of 100, above the 83.1 national average, and filed 179 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

ROBERT KLAFTER, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

ROBERT KLAFTER, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 07/21/2005

NPI 1558360446

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

179 79% vs specialty avg

2023 prescription claims

Specialty avg: 847

MIPS final score

98.5/100 15.400000000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Georgia

How Hematology & Oncology Physician compares to other specialties among Georgia providers

Georgia providers

Hematology & Oncology Physician share within Georgia

1. Hematology & Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hematology & Oncology Physician share within Georgia

Medicare quality performance — MIPS

ROBERT KLAFTER, M.D.'s 2023 MIPS final score plotted against the Hematology & Oncology Physician national average

High performer (top quartile)
MIPS Final Score
98.5/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Hematology & Oncology Physician) — 98.5/100 vs national avg 83.1

0%100%National avg83%98.5%
MIPS final score (Hematology & Oncology Physician) — 98.5/100 vs national avg 83.1

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 KLAFTER, M.D. is a Hematology & Oncology Physician provider practicing in STOCKBRIDGE, Georgia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1558360446. 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 KLAFTER, M.D. appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding M.D. credentials at 1757 ROCK QUARRY RD STE A, STOCKBRIDGE, GA, 30281, with a listed phone of (678) 284-6575. NPI 1558360446 was issued on 07/21/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KLAFTER 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 179 prescription claims written by this provider, covering 60 Medicare beneficiaries and totaling roughly $348K in drug spend, split 14% brand-name and 86% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 98.5/100 for the 2023 performance year, compared with the national average of 83.1.

Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 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

1757 ROCK QUARRY RD STE A
STOCKBRIDGE, GA 30281

Provider Details

NPI 1558360446
Specialty Hematology & Oncology Physician
Credentials M.D.
Gender Male
NPI Issued 07/21/2005

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

98.5
Final Score
Avg: 83.1
98
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where ROBERT KLAFTER, 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.

PHOEBE PUTNEY MEMORIAL HOSPITAL, INC.
ALBANY, GA
PIEDMONT PROVIDERS LLC
ATLANTA, GA

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 ROBERT KLAFTER, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$624

Largest payer

GENZYME CORPORATION

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

ROBERT KLAFTER, M.D. — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 179 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.

179
Total Claims
$348K
Total Drug Cost
60
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
244
Total Day Supply
5,573
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$338K
Generic Drug Cost
$9K

Patient Demographics

Average Patient Age
75.8 years
Avg HCC Risk Score
2.37
Gender Split
57% female / 43% 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
Anastrozole
19
Ondansetron Hcl
14
Dexamethasone
11
Letrozole
11

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

Hematology & Oncology Physician Overview

How ROBERT KLAFTER, M.D. fits within the Hematology & Oncology Physician landscape nationally.

11,215
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider

ROBERT KLAFTER, M.D.'s 179 claims are below the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in Georgia

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

Compare Hematology & Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROBERT KLAFTER, M.D.'s specialty?
ROBERT KLAFTER, M.D. specializes in Hematology & Oncology Physician and practices in STOCKBRIDGE, Georgia. Credentials: M.D..
How much does ROBERT KLAFTER, M.D. prescribe under Medicare Part D?
In 2023, ROBERT KLAFTER, M.D. wrote 179 Medicare Part D claims totaling $348K in drug costs for 60 beneficiaries.
What is ROBERT KLAFTER, M.D.'s Medicare quality score?
ROBERT KLAFTER, M.D. has a CMS MIPS Final Score of 98.5/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ROBERT KLAFTER, M.D. located?
ROBERT KLAFTER, M.D. is located at 1757 ROCK QUARRY RD STE A, STOCKBRIDGE, GA, 30281. Phone: (678) 284-6575.
What is ROBERT KLAFTER, M.D.'s NPI number?
ROBERT KLAFTER, M.D.'s National Provider Identifier (NPI) is 1558360446, issued on 07/21/2005.
Does ROBERT KLAFTER, M.D. prescribe more brand-name or generic drugs?
ROBERT KLAFTER, M.D.'s prescribing is 14% brand-name and 86% generic drugs by claim count, with $338K in brand drug costs.
How many Hematology & Oncology Physician providers are there in the US?
There are 11,215 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does ROBERT KLAFTER, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ROBERT KLAFTER, M.D.'s most frequently prescribed drugs include Anastrozole, Ondansetron Hcl, Dexamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT KLAFTER, M.D. accept Medicare?
ROBERT KLAFTER, M.D. appears in CMS Medicare data with 179 Part D claims and 60 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT KLAFTER, M.D.'s credentials?
ROBERT KLAFTER, M.D.'s NPI is 1558360446 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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