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2026 NPPES data Specialist NPI 1326060856 M.D.
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Jonathan Klein, M.D.

Specialist in Falls Church, Virginia.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 69,608 in Specialist, 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
3K
Medicare Part D claims · 228 beneficiaries · Specialist avg: 1K
Generic prescribing
86%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
26.6/100
▼ 57 pts below national avg 83.5 · Below average
Industry payments
$349.37
16 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Jonathan Klein, M.D. reported a CMS MIPS final score of 26.6/100 - below the 83.5 national average - and filed 3,367 Medicare Part D claims in 2023.

26.6/100
MIPS score · -57 vs avg
3K
Part D claims, 2023
86%
generic prescribing
$349.37
industry payments (Sunshine Act)

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.

CMS NPPES provider registry desk

NPI 1326060856 · Specialist

NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-LOW · RX-MID · BOOK-LIGHT · PHOTO-FINISH

  • NPI-10 1326060856
  • ENUM-LEGACY 2006
  • TAX-MEGA 70K Specialist
  • MIPS-LOW 26.6/100
  • RX-MID 3,367
  • BOOK-LIGHT 1,017 in Virginia
  • PHOTO-FINISH Kelvin Contreary · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Jonathan Klein, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

27 ≥ 3rd percentile 3% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). This entry sits in this band. 30–40: 2,746 measured providers (1%). Above this entry. 40–50: 2,928 measured providers (1%). Above this entry. 50–60: 5,882 measured providers (1%). Above this entry. 60–70: 13,906 measured providers (3%). Above this entry. 70–80: 94,570 measured providers (21%). Above this entry. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Jonathan Klein, M.D. sits

This provider among specialist peers

Across the 4,261 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Jonathan Klein, M.D. writes more Part D claims than 83% of them and scores higher on MIPS quality than 13% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.148.372.496.6Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 0Jonathan Klein, M.D., Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 13
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one specialist peer from a representative sample of 60; the gold marker is Jonathan Klein, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Jonathan Klein, M.D.?

Below national average

NPI registry status

Active

Issued 07/24/2006

NPI 1326060856

Primary specialty

Specialist

High-volume

69,608 US NPIs in this specialty

Medicare Part D claims

3,367 128% vs specialty avg

2023 prescription claims

Specialty avg: 1,474

MIPS final score

26.6/100 56.9 pts vs avg

Below average band

vs 83.5 national avg

Specialty distribution in Virginia

How Specialist compares to other specialties among Virginia providers

Virginia providers
Behavior Technician5.2%Clinical Social Worker5.1%Student in an Organized Heal…4.7%Physical Therapist4.6%Pharmacist4.5%Professional Counselor4%Specialist0.7%
Largest specialties in Virginia (% of in-state providers)

Medicare quality performance, MIPS

Jonathan Klein, M.D.'s 2023 MIPS final score plotted against the Specialist national average

Below national average
MIPS Final Score
26.6/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%26.6%
MIPS final score (Specialist) - 26.6/100 vs national avg 83.5
How MIPS and board certification work

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).

Practice Address

6400 ARLINGTON BLVD
Falls Church, VA 22042
(703) 241-1010

Provider Details

NPI 1326060856
Specialty Specialist
Credentials M.D.
Gender Male
NPI Issued 07/24/2006

CMS Quality Score (MIPS)

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

26.6234
Final Score
Measured-score avg: 83.5
0
Quality
88.7447
Cost

Reporting: Individual

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 Jonathan Klein, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$349

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

Jonathan Klein, M.D. - brand share 13.0%
Specialist average

13% brand-name claims vs 86% generic, on 3,367 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.

3,367
Total Claims
$503K
Total Drug Cost
228
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,423
Total Day Supply
215,841
Brand vs Generic
13% brand / 86% generic
Brand Drug Cost
$430K
Generic Drug Cost
$72K
Opioid Claims
17 (0.5% rate)
Antibiotic Claims
27

Patient Demographics

Average Patient Age
76.4 years
Avg HCC Risk Score
1.53
Gender Split
45% female / 55% male

Top Prescribed Drugs (Medicare Part D)

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

What Jonathan Klein, 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
Atorvastatin Calcium
 340
Amlodipine Besylate
 199
Levothyroxine Sodium
 126
Hydrochlorothiazide
 102
Rosuvastatin Calcium
 92
Metoprolol Succinate
 91
Metformin Hcl
 89
Trazodone Hcl
 85
Lisinopril
 66
Xarelto
Rivaroxaban
64

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

More Specialist in VA → All providers in Virginia → Compare specialties →

Specialist Overview

How Jonathan Klein, M.D. fits within the Specialist landscape nationally.

69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider

Jonathan Klein, M.D.'s 3,367 claims are above the specialty average of 1,474.

Nationwide Specialist peers with similar MIPS or enrollment year

Two federal-record peer sets for Klein, both outside Virginia so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (26.6 here).

Jennifer Ross 26.6 CA Robert Davis 26.7 MD Kelvin Contreary 26.6 LA Christopher Ng 26.6 CA

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

William McKenzie Panama City, FL Parag Lodhavia Milford, DE Beverley Popelas Jeannette, PA Karapet Dermendjian Los Angeles, CA

Nearby Specialist Providers in Virginia

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

One of 1,017 Specialist providers enrolled in Virginia, 5 are shown here.

Dr. Hasan Abdallah
MD
Reston, VA
Dr. Stephen Abramson
M.D.
Richmond, VA
Dr. Richard Abriss
M.D.
Virginia Beach, VA
Joseph Acka
South Hill, VA
Dr. Jon Adleberg
M.D.
Chesapeake, VA

Compare Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is Jonathan Klein, M.D.'s specialty? ▼
Jonathan Klein, M.D. specializes in Specialist and practices in Falls Church, Virginia. Credentials: M.D..
How much does Jonathan Klein, M.D. prescribe under Medicare Part D? ▼
In 2023, Jonathan Klein, M.D. wrote 3,367 Medicare Part D claims totaling $503K in drug costs for 228 beneficiaries.
What is Jonathan Klein, M.D.'s Medicare quality score? ▼
Jonathan Klein, M.D. has a CMS MIPS Final Score of 26.6/100 (Quality: 0, Cost: 88.7). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Jonathan Klein, M.D. located? ▼
Jonathan Klein, M.D. is located at 6400 ARLINGTON BLVD, Falls Church, VA, 22042. Phone: (703) 241-1010.
What is Jonathan Klein, M.D.'s NPI number? ▼
Jonathan Klein, M.D.'s National Provider Identifier (NPI) is 1326060856, issued on 07/24/2006.
Does Jonathan Klein, M.D. prescribe more brand-name or generic drugs? ▼
Jonathan Klein, M.D.'s prescribing is 13% brand-name and 86% generic drugs by claim count, with $430K in brand drug costs.
Does Jonathan Klein, M.D. prescribe opioids? ▼
Yes, Jonathan Klein, M.D. had 17 opioid claims in 2023 with an opioid prescribing rate of 0.5%.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Jonathan Klein, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Jonathan Klein, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jonathan Klein, M.D. accept Medicare? ▼
Jonathan Klein, M.D. appears in CMS Medicare data with 3,367 Part D claims and 228 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jonathan Klein, M.D.'s credentials? ▼
Jonathan Klein, M.D.'s NPI is 1326060856 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

View source datasets and methodology notes
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

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.