Emma Ludwig, MD
NPI 1942838552 · Geriatric Medicine (Internal Medicine) Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Emma Ludwig, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Saint Louis, MO (NPI 1942838552).
Provider details
- NPI number
- 1942838552
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 2024024904 (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 tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
186 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 123 | $174 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 41 | $213 |
| 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 | 22 | $16 |
Typical Medicare-allowed amounts for these services range $16–$213 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 46 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 136 | 35 |
| Atorvastatin Calcium | 123 | 34 |
| Losartan Potassium | 90 | 22 |
| Levothyroxine Sodium | 88 | 24 |
| Rosuvastatin Calcium | 82 | 20 |
| Trazodone Hcl | 82 | 18 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-03-30
- Last updated
- 2025-04-17
- Certified
- 2024-08-29
Frequently asked questions
- What is Emma Ludwig's NPI number?
- Emma Ludwig's National Provider Identifier (NPI) is 1942838552, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Emma Ludwig's specialty?
- Emma Ludwig is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Emma Ludwig located?
- Emma Ludwig's practice location on file with NPPES is 10 Barnes West Dr, Saint Louis, MO 63141-6287.
- What is Emma Ludwig's phone number?
- The practice phone number listed in the NPPES registry for Emma Ludwig is (314) 273-4374.
- Does Emma Ludwig accept Medicare?
- Emma Ludwig is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Emma Ludwig's NPI active?
- Yes — Emma Ludwig's NPI (1942838552) is active in the NPPES registry as of the last update on 2025-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.