Mary Grace Tanguilan, M.D.
Internal Medicine Physician · Abingdon, MD
Mary Grace Tanguilan, M.D. is an internal medicine physician with a practice address in Abingdon, Maryland, and NPI 1164853560, issued on Dec 10, 2013. Check the license (Maryland D00077329, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mary Grace Tanguilan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D00077329 MD
Self-reported in NPPES; status is on the state search - Practice location
- 3401 Box Hill Corporate Center Dr Ste 100, Abingdon, MD 21009
- Phone
- (410) 671-0017
- Enumerated
- Dec 10, 2013
- Record last updated
- Jan 22, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (410) 671-7072
- Medicare enrollment
- Enrolled (PECOS I20140731001915); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 3401 Box Hill Corporate Center Dr Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Reuben Abraham, M.D.Internal Medicine Physician1245522143
- Susan Gorschboth, DNP AGPCNP-BC/CPrimary Care Nurse Practitioner1639722036
- Devon Isaac, CRNPAdult Health Nurse Practitioner1124806963
- Khaing Win, MDFamily Medicine Physician1457933244
Verify Mary Grace Tanguilan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D00077329Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average internal medicine physician in 2024
10,361 Medicare Part D claims for 1,093 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 93 claims were for opioids.
Most prescribed
- Atorvastatin Calcium798 claims
- Amlodipine Besylate415 claims
- Levothyroxine Sodium397 claims
- Losartan Potassium359 claims
- Lisinopril311 claims
- Pantoprazole Sodium236 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: $1,465.61
69 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. 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 2 group practices
- Agape Physical Therapy And Sports Rehabilitation LPForest Hill, MD
- Harford Primary Care LLCBel Air, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Grace Tanguilan among 3,904 internal medicine physician records in Maryland
Mary Grace Tanguilan, M.D. is one of 3,904 internal medicine physician records with a practice address in Maryland. 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 2013, is newer than 72% of them.
- NPI issued2013 · 72% of these records are older, 26% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2008 · median 2003 among the 2,445 with a school on file
- Record last updated2015 · 59% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 internal medicine physician records list a practice address in Abingdon
They are 5 of the 257 NPPES records with a practice address in Abingdon, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Abingdon → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Reuben Abraham, M.D.Abingdon, MD 210091245522143
- Kamal Baig, M.D.Abingdon, MD 210091588026710
- Carol Bowman, M.D.Abingdon, MD 210091144373911
- Stanley Kman, D.O.Abingdon, MD 210091851396477
- Akber Ahmad, MDArnold, MD 210121578546941
- Sean Duffy, D.O.Arnold, MD 210121033371752
- Courtney Milne-Krohn, M.DArnold, MD 210121588823611
- Sadaf Rahman, MDArnold, MD 210121700414919
Common questions
What is Mary Grace Tanguilan, M.D.'s NPI number?
Mary Grace Tanguilan, M.D.'s National Provider Identifier (NPI) is 1164853560, issued on Dec 10, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Mary Grace Tanguilan, M.D. located?
The NPPES record lists a practice address at 3401 Box Hill Corporate Center Dr Ste 100, Abingdon, MD, 21009. Phone: (410) 671-0017. Providers update this record themselves, so call before visiting.
How can I verify Mary Grace Tanguilan, M.D.'s license?
NPPES lists Maryland license number D00077329, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Grace Tanguilan, M.D. prescribe under Medicare Part D?
In 2024, Mary Grace Tanguilan, M.D. had 10,361 Medicare Part D claims for 1,093 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.