2026 NPPES data Hematology & Oncology Physician NPI 1336406685 DO
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CHELSEA THOMAS, DO

Hematology & Oncology Physician in TULSA, Oklahoma. 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
1K
Medicare Part D claims · 251 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.393/100
▼ 4 pts below national avg 83.1 · [object Object]
Industry payments
$682.13
38 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: CHELSEA THOMAS, DO is a Hematology & Oncology Physician ([object Object]) practicing in TULSA, Oklahoma with a Medicare Part D prescribing footprint of 1K claims across 251 beneficiaries — 19% brand-name prescribing . Their CMS MIPS Final Score of 79.393/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $682.13 across 38 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: CHELSEA THOMAS, DO reported a CMS MIPS final score of 79.393 out of 100, below the 83.1 national average, and filed 1,453 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)

CHELSEA THOMAS, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 3 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

CHELSEA THOMAS, DO at a glance

Near national average

NPI registry status

Active

Issued 04/11/2012

NPI 1336406685

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

1,453 72% vs specialty avg

2023 prescription claims

Specialty avg: 847

MIPS final score

79.393/100 3.7069999999999936% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Oklahoma

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

Oklahoma providers

Hematology & Oncology Physician share within Oklahoma

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

Medicare quality performance — MIPS

CHELSEA THOMAS, DO's 2023 MIPS final score plotted against the Hematology & Oncology Physician national average

Near national average
MIPS Final Score
79.393/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Hematology & Oncology Physician) — 79.393/100 vs national avg 83.1

0%100%National avg83%79.4%
MIPS final score (Hematology & Oncology Physician) — 79.393/100 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).

CHELSEA THOMAS, DO is a Hematology & Oncology Physician provider practicing in TULSA, Oklahoma, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DO. NPI: 1336406685. 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.

CHELSEA THOMAS, DO appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding DO credentials at 1245 S UTICA AVE, TULSA, OK, 74104, with a listed phone of (918) 579-3850. NPI 1336406685 was issued on 04/11/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what THOMAS 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 1,453 prescription claims written by this provider, covering 251 Medicare beneficiaries and totaling roughly $2.4 million in drug spend, split 19% brand-name and 81% generic by claim count, with an opioid prescribing rate of 10.0%. 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 79.393/100 for the 2023 performance year (Quality 77.7697, Cost 54.3735), 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

1245 S UTICA AVE
TULSA, OK 74104

Provider Details

NPI 1336406685
Specialty Hematology & Oncology Physician
Credentials DO
Gender Female
NPI Issued 04/11/2012

CMS Quality Score (MIPS)

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

79.393
Final Score
Avg: 83.1
77.7697
Quality
54.3735
Cost
99
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where CHELSEA THOMAS, DO 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.

OU HEALTH PARTNERS INC
OKLAHOMA CITY, OK
SAINT FRANCIS HOSPITAL, INC.
TULSA, OK
WARREN CLINIC 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).

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 CHELSEA THOMAS, DO. Source: openpaymentsdata.cms.gov.

Total received

$682

Largest payer

Novartis Pharmaceuticals 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

CHELSEA THOMAS, DO — brand share 19.0%
Specialty average (est.)

19% brand-name claims vs 81% generic, on 1,453 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.

1,453
Total Claims
$2.4M
Total Drug Cost
251
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,294
Total Day Supply
62,891
Brand vs Generic
19% brand / 81% generic
Brand Drug Cost
$1.9M
Generic Drug Cost
$478K
Opioid Claims
145 (10.0% rate)
Antibiotic Claims
25

Patient Demographics

Average Patient Age
72.7 years
Avg HCC Risk Score
1.93
Gender Split
77% female / 23% male
Age Distribution
<65: 21, 65-74: 129, 75-84: 80, 85+: 21

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Letrozole
154
Anastrozole
145
Eliquis
Apixaban
95
Pregabalin
73
Gabapentin
71
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
67
Acyclovir
49
Lorazepam
48
Imatinib Mesylate
42
Imbruvica
Ibrutinib
35

* 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 CHELSEA THOMAS, DO 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

CHELSEA THOMAS, DO's 1,453 claims are above the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in Oklahoma

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

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

Frequently Asked Questions

What is CHELSEA THOMAS, DO's specialty?
CHELSEA THOMAS, DO specializes in Hematology & Oncology Physician and practices in TULSA, Oklahoma. Credentials: DO.
How much does CHELSEA THOMAS, DO prescribe under Medicare Part D?
In 2023, CHELSEA THOMAS, DO wrote 1,453 Medicare Part D claims totaling $2.4M in drug costs for 251 beneficiaries.
What is CHELSEA THOMAS, DO's Medicare quality score?
CHELSEA THOMAS, DO has a CMS MIPS Final Score of 79.393/100 (Quality: 77.7697, Cost: 54.3735). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is CHELSEA THOMAS, DO located?
CHELSEA THOMAS, DO is located at 1245 S UTICA AVE, TULSA, OK, 74104. Phone: (918) 579-3850.
What is CHELSEA THOMAS, DO's NPI number?
CHELSEA THOMAS, DO's National Provider Identifier (NPI) is 1336406685, issued on 04/11/2012.
Does CHELSEA THOMAS, DO prescribe more brand-name or generic drugs?
CHELSEA THOMAS, DO's prescribing is 19% brand-name and 81% generic drugs by claim count, with $1.9M in brand drug costs.
Does CHELSEA THOMAS, DO prescribe opioids?
Yes, CHELSEA THOMAS, DO had 145 opioid claims in 2023 with an opioid prescribing rate of 10.0%.
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 CHELSEA THOMAS, DO prescribe most often?
Based on 2023 Medicare Part D data, CHELSEA THOMAS, DO's most frequently prescribed drugs include Letrozole, Anastrozole, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHELSEA THOMAS, DO accept Medicare?
CHELSEA THOMAS, DO appears in CMS Medicare data with 1,453 Part D claims and 251 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHELSEA THOMAS, DO's credentials?
CHELSEA THOMAS, DO's NPI is 1336406685 with credentials DO. 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