Dr. Michael K. Maxwell, MD

  • Tulsa, OK
  • Internist
NPI1346219334PAC ID5597954024
Medicare services, 2024
2,450
Medicare patients, 2024
564
Part D claims, 2024
14,272
Publications
2
Hospital affiliations
4
Practice address
1923 South Utica Avenue, Tulsa, OK 74104
Practice phone
Call (918) 744-2296
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Ascension St. John Medical Center

Hospital · Tulsa, Oklahoma

See all 7 affiliations

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Dr. Michael K. Maxwell is an internist in Tulsa, Oklahoma

Dr. Maxwell practices at Ascension St. John Medical Center in Tulsa, Oklahoma, part of Ascension Health Alliance.

Dr. Maxwell's NPI, 1346219334, was assigned on March 14, 2006. Dr. Maxwell graduated from University of Oklahoma College of Medicine in 1984. Dr. Maxwell holds Oklahoma license 15222.

NPI and contact details
Medicare PAC ID
5597954024
NPI enumeration date
March 14, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(918) 744-2296
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
68
Medical school graduation
1984

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Michael K. Maxwell practices at Ascension St. John Medical Center in Tulsa, Oklahoma

Dr. Maxwell's primary practice is Ascension St. John Medical Center, at 1923 South Utica Avenue, Tulsa, OK 74104 in Tulsa County. The practice phone is (918) 744-2296.

Source: Dmand AI Affiliation Data

Dr. Michael K. Maxwell is affiliated with 6 sites of care and 1 medical group

Dr. Maxwell's primary practice is Ascension St. John Medical Center in Tulsa, Oklahoma, part of Ascension Health Alliance. Dr. Maxwell is also affiliated with Saint Francis Hospital. The medical group on file is Omni Medical Group. Dmand AI also links Dr. Maxwell to 2 more hospitals, 1 group practice or clinic and 1 urgent care center, each named with a free account.

See all 7 affiliations for Dr. Maxwell

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Michael K. Maxwell's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maxwell practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Ascension St. John Medical CenterAvailable with a free account
+5 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Michael K. Maxwell is one of 1,018 internists in Oklahoma

Internal medicine is Dr. Maxwell's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Maxwell is licensed in Oklahoma.

Specialties and state licenses

  • Internal medicine, OklahomaPrimaryLicense 15222 · taxonomy 207R00000X

Internists near Dr. Maxwell

Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Michael K. Maxwell billed Medicare for 2,450 services in 2024

CMS data shows 2,450 Medicare services from Dr. Maxwell across 16 procedure codes in 2024, for 564 Medicare patients. Medicare paid $79,949 for them. Every service was in an office.

Medicare services, 20242,450
Medicare patients564
Paid by Medicare$79,949
Procedure codes16

Dr. Maxwell's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1,0292024: 1,0603%
Other services
2023: 4872024: 87079%
Tests and treatments
2023: 1612024: 27168%
Lab and pathology
2023: 2882024: 24914%

Dr. Maxwell compared with the Oklahoma median for internists, 2024

  • Dr. Maxwell
  • Oklahoma median
Medicare services
2,450vs 6363.9 times
Medicare patients
564vs 2432.3 times
Part D claims
13,595vs 28248.2 times

Medians across 969 internists in Oklahoma with Dmand AI profiles that report each measure.

Dr. Maxwell's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Maxwell

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Michael K. Maxwell treated 564 Medicare patients in 2024, average age 76

CMS counts 564 Medicare patients who saw Dr. Maxwell in 2024. The largest group is 65 to 74, with 236 patients. 72% of them have high blood pressure, and 59% have high cholesterol. Their average risk score is 0.92, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Maxwell's median patient age at 73, with 48% women.

Medicare patients, 2024564
Average age76
Average risk score0.92

Dr. Maxwell's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Maxwell's Medicare patients by sex, 2024

  • Women26848%
  • Men29652%

Chronic conditions among Dr. Maxwell's Medicare patients, 2024

  1. High blood pressure72%
  2. High cholesterol59%
  3. Arthritis43%
  4. Ischemic heart disease25%
  5. Chronic kidney disease20%
  6. Atrial fibrillation17%
  7. Diabetes16%
  8. Mood disorders16%

Share of Medicare patients with each condition. A patient can have several.

Dr. Maxwell's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 73

Patient panel by sex, all payers

  • Women48%
  • Men51%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Michael K. Maxwell wrote 14,272 Medicare Part D claims in 2024

In 2024, Dr. Maxwell wrote 14,272 Medicare Part D claims for 1,062 patients. 87% of them were for generic drugs. CMS names the drug for 13,595 of them, across 162 drugs with 11 or more claims each, at $874,273 in total drug cost. In 2023, CMS named 14,776 claims across 167 drugs.

Part D claims, 202414,272
Drugs named by CMS162
Total drug cost$874,273
Part D patients1,062

Dr. Maxwell's Part D claims by kind of drug, 2024

  • Generic12,405 claims87%
  • Brand-name1,776 claims12%
  • Other91 claims1%

Dr. Maxwell's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Maxwell's Part D claims, 2024

  • Opioids2%259 of 14,272 claims
  • Antibiotics1%175 of 14,272 claims
  • Antipsychotics, patients 65 and over0%18 of 14,272 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 14,7762024: 13,5958%

Drugs named by CMS: 162 in 2024, 167 in 2023.

See all prescribing by Dr. Maxwell

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Michael K. Maxwell takes part in Medicare

Dr. Maxwell accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Michael K. Maxwell has 2 publications on record

Dmand AI links 2 papers to Dr. Maxwell, published from 2014 to 2021. Dr. Maxwell's most frequent co-author is Michael W. Maxwell, MD.

Papers2
Years published2014 to 2021

Dr. Maxwell's most frequent co-authors

Recent publications by Dr. Maxwell

See all 2 publications and co-authors

See who Dr. Maxwell researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Maxwell works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Michael K. Maxwell received $222 in industry payments from 2017 to 2023

CMS Open Payments shows 4 general payments to Dr. Maxwell from 4 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Nuvasive, Inc. paid the most, $110.

General payments to Dr. Maxwell by program year, 2017 to 2023

Companies that paid Dr. Maxwell the most, 2017 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Maxwell

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Michael K. Maxwell graduated from University of Oklahoma College of Medicine

Dr. Maxwell graduated from University of Oklahoma College of Medicine in 1984.

  1. Medical schoolUniversity of Oklahoma College of Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Michael K. Maxwell's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Michael K. Maxwell

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Michael K. Maxwell's NPI number?

Dr. Michael K. Maxwell's NPI number is 1346219334. It was assigned on March 14, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Michael K. Maxwell?

Dr. Michael K. Maxwell is an internist in Tulsa, Oklahoma. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Michael K. Maxwell practice?

Dr. Maxwell practices at 1923 South Utica Avenue, Tulsa, OK 74104. Dr. Maxwell's primary practice is Ascension St. John Medical Center in Tulsa, Oklahoma, part of Ascension Health Alliance. Dmand AI also links Dr. Maxwell to 2 hospitals, 1 group practice or clinic and 1 urgent care center.

What is Dr. Michael K. Maxwell's office phone number?

The practice phone on file for Dr. Maxwell is (918) 744-2296.

What is Dr. Michael K. Maxwell's medical license number?

Dr. Maxwell holds Oklahoma license 15222.

Which hospitals is Dr. Michael K. Maxwell affiliated with?

Dr. Maxwell practices at Ascension St. John Medical Center in Tulsa, Oklahoma. Dr. Maxwell is also affiliated with Saint Francis Hospital. Dmand AI links Dr. Maxwell to 2 more hospitals.

What medical group is Dr. Michael K. Maxwell part of?

Dr. Maxwell is linked to Omni Medical Group.

Does Dr. Michael K. Maxwell accept Medicare?

Yes. CMS data shows Dr. Maxwell billed Medicare for 2,450 services in 2024, and Dr. Maxwell accepts Medicare assignment.

How many Medicare patients does Dr. Michael K. Maxwell see?

CMS counts 564 Medicare patients who saw Dr. Maxwell in 2024, with an average age of 76.

What services does Dr. Michael K. Maxwell bill to Medicare?

In 2024, Dr. Maxwell's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and medicare service (G2211).

Show 6 more questionsShow fewer questions

Where did Dr. Michael K. Maxwell go to medical school?

Dr. Maxwell graduated from University of Oklahoma College of Medicine in 1984.

What drugs does Dr. Michael K. Maxwell prescribe most?

In 2024 Medicare Part D data, Dr. Maxwell's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Levothyroxine Sodium.

Has Dr. Michael K. Maxwell received payments from drug or device companies?

CMS Open Payments shows $222 in general payments to Dr. Maxwell from 4 companies from 2017 to 2023. The largest total came from Nuvasive, Inc.

How long has Dr. Michael K. Maxwell been practicing?

Dr. Maxwell graduated from medical school in 1984, 42 years ago.

Does Dr. Michael K. Maxwell do research?

Dmand AI links 2 publications to Dr. Maxwell, published from 2014 to 2021.

Who does Dr. Michael K. Maxwell publish with?

Dr. Maxwell's most frequent co-authors are Michael W. Maxwell, MD (2 shared papers).

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