Natalia Keyser, M.D.
NPI 1043242878 · Hospitalist Physician · Naples, FL
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Natalia Keyser, M.D. is a Hospitalist Physician provider in Naples, FL (NPI 1043242878).
Provider details
- NPI number
- 1043242878
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- ME91753 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
19 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
841 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 486 | $81 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 162 | $117 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 73 | $122 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 70 | $176 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 50 | $135 |
Typical Medicare-allowed amounts for these services range $81–$176 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 28 | 22 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 25 | — |
| Apixabanbrand: Eliquis | 18 | 17 |
| Pantoprazole Sodium | 17 | 17 |
| Lisinopril | 15 | — |
| Sacubitril/Valsartanbrand: Entresto | 14 | — |
Practice location
Mailing address
Additional practice locations (1)
- 2675 Winkler Ave Fl 2Fort Myers, FL 33901-9342Phone: (855) 979-5700Fax: (855) 979-5701
Registry dates
- Enumerated
- 2006-07-06
- Last updated
- 2020-07-30
- Certified
- 2020-07-30
Frequently asked questions
- What is Natalia Keyser's NPI number?
- Natalia Keyser's National Provider Identifier (NPI) is 1043242878, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Natalia Keyser's specialty?
- Natalia Keyser is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Natalia Keyser located?
- Natalia Keyser's practice location on file with NPPES is 350 7th St N, Naples, FL 34102-5754.
- What is Natalia Keyser's phone number?
- The practice phone number listed in the NPPES registry for Natalia Keyser is (239) 624-3997.
- Does Natalia Keyser accept Medicare?
- Natalia Keyser is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Natalia Keyser's NPI active?
- Yes — Natalia Keyser's NPI (1043242878) is active in the NPPES registry as of the last update on 2020-07-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.