Diana Marie Chen, MD
Internal Medicine Physician · Tulsa, OK
Diana Marie Chen, MD is an internal medicine physician with a practice address in Tulsa, Oklahoma, and NPI 1518919091, issued on May 16, 2006. Check the license (Oklahoma 16942, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Diana Marie Chen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 16942 OK
Self-reported in NPPES; status is on the state search - Practice location
- 4408 S Harvard Ave, Tulsa, OK 74135
- Phone
- (918) 574-0350
- Enumerated
- May 16, 2006
- Record last updated
- Feb 24, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (918) 574-0359
- Medicaid ID
- 100045660A OK
- Medicare enrollment
- Enrolled (PECOS I20040923000844); accepts Medicare assignment
- Medical or professional school
- University Of Toledo College Of Medicine, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,115 in Oklahoma → Look up another NPI →
Also registered at 4408 S Harvard Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ryan Choplin, P.A.Medical Physician Assistant1760729610
- Paige Steiner, DOFamily Medicine Physician1801539796
- Danny Thomason, D.O.Family Medicine Physician1851352645
- Candy Ting, D.O.Family Medicine Physician1558330035
- Elizabeth Weilert, APRN FNP-CFamily Nurse Practitioner1225537277
Verify Diana Marie Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 16942Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,656 Medicare Part D claims for 286 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 126 claims were for opioids.
Most prescribed
- Trazodone Hcl387 claims
- Rosuvastatin Calcium343 claims
- Atorvastatin Calcium289 claims
- Gabapentin271 claims
- Lamotrigine195 claims
- Duloxetine Hcl174 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $3,309.75
138 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Ahs Oklahoma Physician Group LLCTulsa, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diana Marie Chen among 1,115 internal medicine physician records in Oklahoma
Diana Marie Chen, MD is one of 1,115 internal medicine physician records with a practice address in Oklahoma. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 57% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1988 · median 2007 among the 653 with a school on file
- Record last updated2015 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
307 internal medicine physician records list a practice address in Tulsa
They are 307 of the 18,643 NPPES records with a practice address in Tulsa, and 1,115 internal medicine physician records in Oklahoma.
All 1,115 in Oklahoma → Every provider in Tulsa → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Pallavi Agarwal, M.D.Tulsa, OK 741351831249812
- Vishal Aggarwal, MDTulsa, OK 741351295705663
- David Gilbert, M.D.Tulsa, OK 741351225176779
- Robert Harris, M.D,Tulsa, OK 741351528061652
- Thomas Hoskison, MDTulsa, OK 741351598735953
- Martina Jelley, MDTulsa, OK 741351427028885
- David Kendrick, MD MPHTulsa, OK 741351952382798
- Connie Lane, MDTulsa, OK 741351457454043
Common questions
What is Diana Marie Chen, MD's NPI number?
Diana Marie Chen, MD's National Provider Identifier (NPI) is 1518919091, issued on May 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diana Marie Chen, MD located?
The NPPES record lists a practice address at 4408 S Harvard Ave, Tulsa, OK, 74135. Phone: (918) 574-0350. Providers update this record themselves, so call before visiting.
How can I verify Diana Marie Chen, MD's license?
NPPES lists Oklahoma license number 16942, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Diana Marie Chen, MD prescribe under Medicare Part D?
In 2024, Diana Marie Chen, MD had 7,656 Medicare Part D claims for 286 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.