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2026 NPPES data Pain Medicine Physician NPI 1083858138 M.D.
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Andrew Barker, M.D.

Pain Medicine Physician in Tulsa, Oklahoma.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,006 in Pain Medicine 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
855
Medicare Part D claims · 333 beneficiaries · Pain Medicine Physician avg: 2K
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
97.6/100
▲ 14 pts above national avg 83.5 · Exceptional
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Andrew Barker, M.D. reported a CMS MIPS final score of 97.6/100 - above the 83.5 national average - and filed 855 Medicare Part D claims in 2024.

97.6/100
MIPS score · +14 vs avg
855
Part D claims, 2024
97%
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 Andrew Barker, 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 1083858138), first enumerated 04/20/2009.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 855 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 97.6/100 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

    Hospital affiliations

    2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.

    Source: CMS Care Compare

  • 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 1083858138 · Pain Medicine Physician

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

  • NPI-10 1083858138
  • ENUM-MID 2009
  • TAX-NARROW 1,006
  • MIPS-ELITE 97.6/100
  • RX-LIGHT 855
  • BOOK-THIN 17 in Oklahoma
  • PHOTO-FINISH Mallikarjuna Nallego… · ±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

Andrew Barker, 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 ≥ 84th percentile 84% 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 Andrew Barker, M.D. sits

This provider among pain medicine physician peers

Across the 262 pain medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Andrew Barker, M.D. writes more Part D claims than 36% of them and scores higher on MIPS quality than 90% - placing this provider in the lower-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 quality0255075100024.949.974.899.8Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 42Andrew Barker, M.D., Part D claim volume, percentile in specialty: 36 · MIPS quality, percentile: 90
Part D claim volume vs MIPS quality, by specialty percentile

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

✓
Board certification likely (heuristic, not verified)

Andrew Barker, 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).

What does the federal data show about Andrew Barker, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 04/20/2009

NPI 1083858138

Primary specialty

Pain Medicine Physician

Niche

1,006 US NPIs in this specialty

Medicare Part D claims

855 59% vs specialty avg

2024 prescription claims

Specialty avg: 2,094

MIPS final score

97.6/100 14.1 pts vs avg

Exceptional band

vs 83.5 national avg

Specialty distribution in Oklahoma

How Pain Medicine Physician compares to other specialties among Oklahoma providers

Oklahoma providers
Case Manager/Care Coordinator9.6%Mental Health Counselor7%Behavior Technician6.6%Peer Specialist5.6%Counselor4.9%Student in an Organized Heal…4.2%Pain Medicine Physician0%
Largest specialties in Oklahoma (% of in-state providers)

Medicare quality performance, MIPS

Andrew Barker, M.D.'s 2023 MIPS final score plotted against the Pain Medicine Physician national average

High performer (top quartile)
MIPS Final Score
97.6/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%97.6%
MIPS final score (Pain Medicine Physician) - 97.6/100 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

10505 E 91ST ST
Tulsa, OK 74133
(918) 307-5470

Provider Details

NPI 1083858138
Specialty Pain Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 04/20/2009

CMS Quality Score (MIPS)

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

97.5814
Final Score
Measured-score avg: 83.5
86.5348
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where Andrew Barker, 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.

Ahs Oklahoma Physician Group LLC
Owasso, OK
Tulsa Pain Consultants Inc
Tulsa, OK

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

Brand vs generic prescribing mix · Generic-heavy

Andrew Barker, M.D. - brand share 3.0%
Pain Medicine Physician average

3% brand-name claims vs 97% generic, on 855 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.

855
Total Claims
$42K
Total Drug Cost
333
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,067.5
Total Day Supply
30,504
Brand vs Generic
3% brand / 97% generic
Brand Drug Cost
$16K
Generic Drug Cost
$26K
Opioid Claims
298 (34.9% rate)

Patient Demographics

Average Patient Age
71.0 years
Avg HCC Risk Score
1.56
Gender Split
63% female / 37% male
Age Distribution
<65: 61, 65-74: 141, 75-84: 111, 85+: 20

Top Prescribed Drugs (Medicare Part D)

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

What Andrew Barker, 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
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
199
Pregabalin
 153
Gabapentin
 130
Baclofen
 77
Methocarbamol
 67
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
57
Nortriptyline Hcl
 30
Buprenorphine
 21
Lidocaine
 19
Diazepam
 15

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

More Pain Medicine Physician in OK → All providers in Oklahoma → Compare specialties →

Pain Medicine Physician Overview

How Andrew Barker, M.D. fits within the Pain Medicine Physician landscape nationally.

1,006
Pain Medicine Physician Providers in US
49
States with Pain Medicine Physician
2,094
Avg Claims per Provider

Andrew Barker, M.D.'s 855 claims are below the specialty average of 2,094.

Nationwide Pain Medicine Physician peers with similar MIPS or enrollment year

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

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (97.6 here).

Mallikarjuna Nallegowda 97.6 CO James Morgan 97.7 TX Michael Jung 97.3 WI Eric Hsu 97.3 CA

Same NPPES enumeration year (2009)

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

Emile Allen Oakland, CA Courtney Auman Jacksonville, NC Scott Kim Greenwood, IN Graham Reimer Santa Barbara, CA

Nearby Pain Medicine Physician Providers in Oklahoma

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

One of 17 Pain Medicine Physician providers enrolled in Oklahoma, 5 are shown here.

Dr. David Asher
DO
Tulsa, OK
Dr. Jacob Byers
M.D.
Chickasha, OK
Dr. Benjamin Fore
DO
Ardmore, OK
Dr. Joshua Livingston
D.O.
Broken Arrow, OK
Dr. Bruce Mackey
MD
Edmond, OK

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

Frequently Asked Questions

What is Andrew Barker, M.D.'s specialty? ▼
Andrew Barker, M.D. specializes in Pain Medicine Physician and practices in Tulsa, Oklahoma. Credentials: M.D..
How much does Andrew Barker, M.D. prescribe under Medicare Part D? ▼
In 2024, Andrew Barker, M.D. wrote 855 Medicare Part D claims totaling $42K in drug costs for 333 beneficiaries.
What is Andrew Barker, M.D.'s Medicare quality score? ▼
Andrew Barker, M.D. has a CMS MIPS Final Score of 97.6/100 (Quality: 86.5). 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 Andrew Barker, M.D. located? ▼
Andrew Barker, M.D. is located at 10505 E 91ST ST, Tulsa, OK, 74133. Phone: (918) 307-5470.
What is Andrew Barker, M.D.'s NPI number? ▼
Andrew Barker, M.D.'s National Provider Identifier (NPI) is 1083858138, issued on 04/20/2009.
Does Andrew Barker, M.D. prescribe more brand-name or generic drugs? ▼
Andrew Barker, M.D.'s prescribing is 3% brand-name and 97% generic drugs by claim count, with $16K in brand drug costs.
Does Andrew Barker, M.D. prescribe opioids? ▼
Yes, Andrew Barker, M.D. had 298 opioid claims in 2024 with an opioid prescribing rate of 34.9%.
How many Pain Medicine Physician providers are there in the US? ▼
There are 1,006 Pain Medicine Physician providers across 49 states in the US. The average Pain Medicine Physician provider writes 2,094 Medicare Part D claims per year.
What drugs does Andrew Barker, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Andrew Barker, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Pregabalin, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Andrew Barker, M.D. accept Medicare? ▼
Andrew Barker, M.D. appears in CMS Medicare data with 855 Part D claims and 333 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Andrew Barker, M.D.'s credentials? ▼
Andrew Barker, M.D.'s NPI is 1083858138 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.