Sylvia Tan, M.D.
NPI 1700809720 · Internal Medicine Physician · Guymon, OK
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sylvia Tan, M.D. is a Internal Medicine Physician provider in Guymon, OK (NPI 1700809720).
Provider details
- NPI number
- 1700809720
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 19772 (OK)
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
19 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
3,225 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 | 1,105 | $118 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 311 | $13 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 295 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 291 | $8 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 203 | $120 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 194 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 86 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 239 | 68 |
| Levothyroxine Sodium | 208 | 55 |
| Tramadol Hcl | 164 | 42 |
| Metformin Hcl | 153 | 36 |
| Gabapentin | 143 | 28 |
| Pantoprazole Sodium | 139 | 36 |
| Amlodipine Besylate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$535 across 26 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
- 2006-07-25
- Last updated
- 2024-08-20
- Certified
- 2024-08-20
Frequently asked questions
- What is Sylvia Tan's NPI number?
- Sylvia Tan's National Provider Identifier (NPI) is 1700809720, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sylvia Tan's specialty?
- Sylvia Tan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sylvia Tan located?
- Sylvia Tan's practice location on file with NPPES is 350 Ne 12th St, Guymon, OK 73942-3624.
- What is Sylvia Tan's phone number?
- The practice phone number listed in the NPPES registry for Sylvia Tan is (580) 338-8700.
- Does Sylvia Tan accept Medicare?
- Sylvia Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sylvia Tan's NPI active?
- Yes — Sylvia Tan's NPI (1700809720) is active in the NPPES registry as of the last update on 2024-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.