Tassy Hayden, M.D.
NPI 1871889303 · Family Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tassy Hayden, M.D. is a Family Medicine Physician provider in Saint Louis, MO (NPI 1871889303).
Provider details
- NPI number
- 1871889303
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 248385 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
210 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 42 | $120 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 29 | $85 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 28 | $13 |
| Amplifed Dna Or Rna Probe Detection of Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19) Antigen87635 | 26 | $50 |
| Detection Test By Nucleic Acid for Multiple Types Influenza Virus87502 | 25 | $94 |
| X-Ray of Chest, 2 Views71046 | 21 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Aripiprazole | 13 |
| Atorvastatin Calcium | 13 |
| Escitalopram Oxalate | 13 |
| Metformin Hcl | 13 |
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
Additional practice locations (1)
- 405 Main StHillsboro, MO 63050-4351Phone: (636) 797-3737Fax: (636) 797-4631
Registry dates
- Enumerated
- 2011-06-23
- Last updated
- 2018-05-10
Frequently asked questions
- What is Tassy Hayden's NPI number?
- Tassy Hayden's National Provider Identifier (NPI) is 1871889303, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tassy Hayden's specialty?
- Tassy Hayden is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tassy Hayden located?
- Tassy Hayden's practice location on file with NPPES is 2340 Hampton Ave, Saint Louis, MO 63139-2935.
- What is Tassy Hayden's phone number?
- The practice phone number listed in the NPPES registry for Tassy Hayden is (314) 647-2200.
- Does Tassy Hayden accept Medicare?
- Tassy Hayden is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tassy Hayden's NPI active?
- Yes — Tassy Hayden's NPI (1871889303) is active in the NPPES registry as of the last update on 2018-05-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.