Mary Grace Tanguilan, M.D.
NPI 1164853560 · Internal Medicine Physician · Abingdon, MD
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Grace Tanguilan, M.D. is a Internal Medicine Physician provider in Abingdon, MD (NPI 1164853560).
Provider details
- NPI number
- 1164853560
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- D00077329 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,305 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,645 | $101 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 848 | $17 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 311 | $134 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 261 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 254 | $10 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 145 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 798 | 258 |
| Amlodipine Besylate | 415 | 138 |
| Levothyroxine Sodium | 397 | 126 |
| Losartan Potassium | 359 | 109 |
| Lisinopril | 311 | 108 |
| Pantoprazole Sodium | 236 | 91 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,466 across 69 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-12-10
- Last updated
- 2015-01-22
Frequently asked questions
- What is Mary Grace Tanguilan's NPI number?
- Mary Grace Tanguilan's National Provider Identifier (NPI) is 1164853560, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Grace Tanguilan's specialty?
- Mary Grace Tanguilan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Grace Tanguilan located?
- Mary Grace Tanguilan's practice location on file with NPPES is 3401 Box Hill Corporate Center Dr Ste 100, Abingdon, MD 21009-1251.
- What is Mary Grace Tanguilan's phone number?
- The practice phone number listed in the NPPES registry for Mary Grace Tanguilan is (410) 671-0017.
- Does Mary Grace Tanguilan accept Medicare?
- Mary Grace Tanguilan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Grace Tanguilan's NPI active?
- Yes — Mary Grace Tanguilan's NPI (1164853560) is active in the NPPES registry as of the last update on 2015-01-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.