Theodore Conrad Ang Tan, M.D.
Internal Medicine Physician · Dover, DE
Theodore Conrad Ang Tan, M.D. is an internal medicine physician with a practice address in Dover, Delaware, and NPI 1003046624, issued on Jul 16, 2009. Check the license (Delaware C10010131, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Theodore Conrad Ang Tan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- C10010131 DE
Self-reported in NPPES; status is on the state search - Practice location
- 810 New Burton RD, Dover, DE 19904
- Phone
- (302) 730-0554
- Enumerated
- Jul 16, 2009
- Record last updated
- Dec 28, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (302) 730-1175
- Medicare enrollment
- Enrolled (PECOS I20120927000038); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 600 in Delaware → Look up another NPI →
Also registered at 810 New Burton RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa Leonard, MSN, FNP-CFamily Nurse Practitioner1861871238
- Lisa Prisco, P.T.Physical Therapist1871970053
- Jacqueline Tiller, MSN,FNP-BCFamily Nurse Practitioner1386938249
Verify Theodore Conrad Ang Tan 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 C10010131Check 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
7,465 Medicare Part D claims for 740 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 34 claims were for opioids.
Most prescribed
- Atorvastatin Calcium599 claims
- Amlodipine Besylate432 claims
- Losartan Potassium339 claims
- Levothyroxine Sodium237 claims
- Metformin Hcl237 claims
- Lisinopril229 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: $503.48
26 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
- Delaware Primary Care LLCDover, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Theodore Conrad Ang Tan among 600 internal medicine physician records in Delaware
Theodore Conrad Ang Tan, M.D. is one of 600 internal medicine physician records with a practice address in Delaware. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 46% of them.
- NPI issued2009 · 46% of these records are older, 51% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1998 · median 2008 among the 414 with a school on file
- Record last updated2015 · 49% 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 Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
44 internal medicine physician records list a practice address in Dover
They are 44 of the 2,137 NPPES records with a practice address in Dover, and 600 internal medicine physician records in Delaware.
All 600 in Delaware → Every provider in Dover → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ephraim Ayoola, M.D.Dover, DE 199041962463398
- Brian Benson, M.D.Dover, DE 199041730148446
- Ciriaco Bongalos, Jr., M.D.Dover, DE 199041174585954
- Daniel Fisher, M.D.Dover, DE 199041043282478
- Christopher Giles, M.D.Dover, DE 199041154381168
- Twifford Jarrell, M.D.Dover, DE 199041356310189
- Sambhab Kumar, MDDover, DE 199041750359840
- Sandeep Mann, M.D.Dover, DE 199041891776761
Common questions
What is Theodore Conrad Ang Tan, M.D.'s NPI number?
Theodore Conrad Ang Tan, M.D.'s National Provider Identifier (NPI) is 1003046624, issued on Jul 16, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Theodore Conrad Ang Tan, M.D. located?
The NPPES record lists a practice address at 810 New Burton RD, Dover, DE, 19904. Phone: (302) 730-0554. Providers update this record themselves, so call before visiting.
How can I verify Theodore Conrad Ang Tan, M.D.'s license?
NPPES lists Delaware license number C10010131, 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 Theodore Conrad Ang Tan, M.D. prescribe under Medicare Part D?
In 2024, Theodore Conrad Ang Tan, M.D. had 7,465 Medicare Part D claims for 740 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.