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2026 NPPES data Surgery Physician NPI 1245463157 M.D.
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James Tseng, M.D.

Surgery Physician in Lake Havasu City, Arizona.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 36,778 in Surgery 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
145
Medicare Part D claims · 98 beneficiaries · Surgery Physician avg: 174
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
98.2/100
▲ 15 pts above national avg 83.5 · Exceptional
Industry payments
$20.26
1 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

James Tseng, M.D. reported a CMS MIPS final score of 98.2/100 - above the 83.5 national average - and filed 145 Medicare Part D claims in 2024.

98.2/100
MIPS score · +15 vs avg
145
Part D claims, 2024
74%
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.

Federal trust snapshot

What official records show about James Tseng, M.D.

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1245463157), first enumerated 08/25/2009.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 145 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 98.2/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Board certification signal

    Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.

    Source: NUCC taxonomy + CMS participation heuristic

  • Reported

    Industry payment transparency

    $20.26 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.

    Source: CMS Open Payments

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1245463157 · Surgery Physician

NPI-10 · ENUM-MID · TAX-MID · MIPS-ELITE · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH

  • NPI-10 1245463157
  • ENUM-MID 2009
  • TAX-MID 37K Surgery Physician
  • MIPS-ELITE 98.2/100
  • RX-LIGHT 145
  • BOOK-LIGHT 823 in Arizona
  • PHOTO-FINISH Inder Khokha · ±0.1

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

James Tseng, 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.

98 ≥ 89th percentile 89% 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%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). Below this entry. 90+: 189,403 measured providers (42%). This entry sits in this band. 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 James Tseng, M.D. sits

This provider among surgery physician peers

Across the 7,271 surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, James Tseng, M.D. writes more Part D claims than 67% of them and scores higher on MIPS quality than 89% - placing this provider in the high-volume, high-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 quality0255075100023.446.770.193.5Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 73James Tseng, M.D., Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 89
Part D claim volume vs MIPS quality, by specialty percentile

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

✓
Board certification likely (heuristic, not verified)

James Tseng, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 James Tseng, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 08/25/2009

NPI 1245463157

Primary specialty

Surgery Physician

Mid-sized

36,778 US NPIs in this specialty

Medicare Part D claims

145 17% vs specialty avg

2024 prescription claims

Specialty avg: 174

MIPS final score

98.2/100 14.7 pts vs avg

Exceptional band

vs 83.5 national avg

Specialty distribution in Arizona

How Surgery Physician compares to other specialties among Arizona providers

Arizona providers
Behavior Technician6%Pharmacist5.4%Family Nurse Practitioner4.3%Physical Therapist4.1%Student in an Organized Heal…3.6%Speech-Language Pathologist3.5%Surgery Physician0.6%
Largest specialties in Arizona (% of in-state providers)

Medicare quality performance, MIPS

James Tseng, M.D.'s 2023 MIPS final score plotted against the Surgery Physician national average

High performer (top quartile)
MIPS Final Score
98.2/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%98.2%
MIPS final score (Surgery Physician) - 98.2/100 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

1972 MESQUITE AVE
Lake Havasu City, AZ 86403
(288) 546-5009

Provider Details

NPI 1245463157
Specialty Surgery Physician
Credentials M.D.
Gender Male
NPI Issued 08/25/2009

CMS Quality Score (MIPS)

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

98.2
Final Score
Measured-score avg: 83.5
100
Quality
94
Promoting Interoperability

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 James Tseng, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$20

Largest payer

Medtronic, 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

James Tseng, M.D. - brand share 26.0%
Surgery Physician average

26% brand-name claims vs 74% generic, on 145 2024 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 2024.

145
Total Claims
$6K
Total Drug Cost
98
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
161
Total Day Supply
2,075
Brand vs Generic
26% brand / 74% generic
Brand Drug Cost
$5K
Generic Drug Cost
$893
Opioid Claims
30 (20.7% rate)
Antibiotic Claims
20

Patient Demographics

Average Patient Age
72.0 years
Avg HCC Risk Score
0.96
Gender Split
43% female / 57% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What James Tseng, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Suflave
Peg 3350/Sod Sulf,chlr/Pot/Mag
32
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
26
Omeprazole
 18
Pantoprazole Sodium
 17

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

More Surgery Physician in AZ → All providers in Arizona → Compare specialties →

Surgery Physician Overview

How James Tseng, M.D. fits within the Surgery Physician landscape nationally.

36,778
Surgery Physician Providers in US
56
States with Surgery Physician
174
Avg Claims per Provider

James Tseng, M.D.'s 145 claims are below the specialty average of 174.

Nationwide Surgery Physician peers with similar MIPS or enrollment year

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

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (98.2 here).

Inder Khokha 98.3 ND Ashley Badger 98.3 NC Orlando Beckum 98.3 TX Kerrey Buser 98.3 NE

Same NPPES enumeration year (2009)

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

Juan Calisto Miami, FL John Welander Pella, IA Wenhong Ren Abington, PA Andrew Dhanasopon New Haven, CT

Nearby Surgery Physician Providers in Arizona

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

One of 823 Surgery Physician providers enrolled in Arizona, 5 are shown here.

Mazin Abdalgadir
Tucson, AZ
Mannal Abdalla
FNP, RN, CSA
Phoenix, AZ
Dr. Joseph Abdo
M.D.
Globe, AZ
Dr. Mohamad Abdulhai
M.D.
Gilbert, AZ
Dr. Moaz Abulfaraj
MD
Fort Defiance, AZ

Compare Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is James Tseng, M.D.'s specialty? ▼
James Tseng, M.D. specializes in Surgery Physician and practices in Lake Havasu City, Arizona. Credentials: M.D..
How much does James Tseng, M.D. prescribe under Medicare Part D? ▼
In 2024, James Tseng, M.D. wrote 145 Medicare Part D claims totaling $6K in drug costs for 98 beneficiaries.
What is James Tseng, M.D.'s Medicare quality score? ▼
James Tseng, M.D. has a CMS MIPS Final Score of 98.2/100 (Quality: 100). 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 James Tseng, M.D. located? ▼
James Tseng, M.D. is located at 1972 MESQUITE AVE, Lake Havasu City, AZ, 86403. Phone: (288) 546-5009.
What is James Tseng, M.D.'s NPI number? ▼
James Tseng, M.D.'s National Provider Identifier (NPI) is 1245463157, issued on 08/25/2009.
Does James Tseng, M.D. prescribe more brand-name or generic drugs? ▼
James Tseng, M.D.'s prescribing is 26% brand-name and 74% generic drugs by claim count, with $5K in brand drug costs.
Does James Tseng, M.D. prescribe opioids? ▼
Yes, James Tseng, M.D. had 30 opioid claims in 2024 with an opioid prescribing rate of 20.7%.
How many Surgery Physician providers are there in the US? ▼
There are 36,778 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 174 Medicare Part D claims per year.
What drugs does James Tseng, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, James Tseng, M.D.'s most frequently prescribed drugs include Suflave, Hydrocodone-Acetaminophen, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does James Tseng, M.D. accept Medicare? ▼
James Tseng, M.D. appears in CMS Medicare data with 145 Part D claims and 98 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James Tseng, M.D.'s credentials? ▼
James Tseng, M.D.'s NPI is 1245463157 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.