Melissa Hager, D.O.
NPI 1033590732 · Rheumatology Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melissa Hager, D.O. is a Rheumatology Physician provider in Saint Louis, MO (NPI 1033590732).
Provider details
- NPI number
- 1033590732
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 2018033547 (MO)
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 tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
864 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 | 397 | $121 |
| 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 | 235 | $16 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 92 | $9 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 48 | $154 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 40 | $160 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 43 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 739 | 205 |
| Hydroxychloroquine Sulfate | 632 | 203 |
| Methotrexate Sodiumbrand: Methotrexate | 309 | 104 |
| Leflunomide | 242 | 76 |
| Folic Acid | 217 | 57 |
| Adalimumabbrand: Humira(cf) Pen | 127 | 16 |
| Meloxicam | 110 | 38 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$99 across 6 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
Additional practice locations (1)
- 615 S New Ballas RdSaint Louis, MO 63141-8221Phone: (314) 251-6382
Registry dates
- Enumerated
- 2015-06-18
- Last updated
- 2023-10-31
- Certified
- 2023-10-31
Frequently asked questions
- What is Melissa Hager's NPI number?
- Melissa Hager's National Provider Identifier (NPI) is 1033590732, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Hager's specialty?
- Melissa Hager is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Melissa Hager located?
- Melissa Hager's practice location on file with NPPES is 3023 N Ballas Rd Ste 500d, Saint Louis, MO 63131-2359.
- What is Melissa Hager's phone number?
- The practice phone number listed in the NPPES registry for Melissa Hager is (314) 996-7930.
- Does Melissa Hager accept Medicare?
- Melissa Hager is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melissa Hager's NPI active?
- Yes — Melissa Hager's NPI (1033590732) is active in the NPPES registry as of the last update on 2023-10-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.