Catherine Michelle Teskin, DO
Rheumatology Physician · Newark, DE
Catherine Michelle Teskin, DO is a rheumatology physician with a practice address in Newark, Delaware, and NPI 1770089112, issued on Apr 4, 2018. Check the license (Delaware C2-0024337, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Catherine Michelle Teskin
- Credential
- DO
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- C2-0024337 DE
Self-reported in NPPES; status is on the state search - Practice location
- Christiana Hospital 4755 Ogletown-Stanton RD, Newark, DE 19718
- Phone
- (302) 320-4411
- Enumerated
- Apr 4, 2018
- Record last updated
- May 19, 2026
- Medicare enrollment
- Enrolled (PECOS I20230816003319); accepts Medicare assignment
- Medical or professional school
- Edward Via Col Of Osteo Medicine-Virginia Campus, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 19 in Delaware → Look up another NPI →
Verify Catherine Michelle Teskin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C2-0024337Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,063 Medicare Part D claims for 198 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Prednisone148 claims
- Hydroxychloroquine Sulfate107 claims
- Alendronate Sodium59 claims
- Gabapentin57 claims
- Celecoxib56 claims
- Methotrexate53 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.
Bills Medicare through one group practice
- Christiana Care Health Services IncNewark, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Michelle Teskin among 19 rheumatology physician records in Delaware
Catherine Michelle Teskin, DO is one of 19 rheumatology physician records with a practice address in Delaware. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 95% of them.
- NPI issued2018 · 95% of these records are older, 0% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2018 · median 1994 among the 15 with a school on file
- Record last updated2026 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Delaware
There are 19 rheumatology physician records in Delaware.
All 19 in Delaware → Every provider in Newark → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Sheerin Javed, M.D.Newark, DE 197131114963626
- Douglas Lienesch, MDNewark, DE 197131124129747
- Devanshu Verma, MDNewark, DE 197131619350451
- Amy Zhang, M.D.Newark, DE 197131861811952
- James Newman, MDWilmington, DE 198011689645319
- Susan Cowdery, MDWilmington, DE 198051336177666
- Shakaib Qureshi, MDWilmington, DE 198051821063108
- Madhavi Valiveti, MDWilmington, DE 198051841240850
Common questions
What is Catherine Michelle Teskin, DO's NPI number?
Catherine Michelle Teskin, DO's National Provider Identifier (NPI) is 1770089112, issued on Apr 4, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Michelle Teskin, DO located?
The NPPES record lists a practice address at Christiana Hospital 4755 Ogletown-Stanton RD, Newark, DE, 19718. Phone: (302) 320-4411. Providers update this record themselves, so call before visiting.
How can I verify Catherine Michelle Teskin, DO's license?
NPPES lists Delaware license number C2-0024337, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Catherine Michelle Teskin, DO prescribe under Medicare Part D?
In 2024, Catherine Michelle Teskin, DO had 1,063 Medicare Part D claims for 198 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.