Marietta Tan, M.D.
NPI 1932342698 · Otolaryngology Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marietta Tan, M.D. is a Otolaryngology Physician provider in Baltimore, MD (NPI 1932342698).
Provider details
- NPI number
- 1932342698
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- D80498 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 25 | 14 |
| Dexamethasone | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-04-10
- Last updated
- 2023-08-25
- Certified
- 2023-08-25
Frequently asked questions
- What is Marietta Tan's NPI number?
- Marietta Tan's National Provider Identifier (NPI) is 1932342698, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marietta Tan's specialty?
- Marietta Tan is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Marietta Tan located?
- Marietta Tan's practice location on file with NPPES is 4940 Eastern Ave, Baltimore, MD 21224-2735.
- What is Marietta Tan's phone number?
- The practice phone number listed in the NPPES registry for Marietta Tan is (410) 550-0460.
- Does Marietta Tan accept Medicare?
- Marietta Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marietta Tan's NPI active?
- Yes — Marietta Tan's NPI (1932342698) is active in the NPPES registry as of the last update on 2023-08-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.