Carl Callahan, CNP
NPI 1750755849 · Family Nurse Practitioner · Saint Louis, MO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carl Callahan, CNP is a Family Nurse Practitioner provider in Saint Louis, MO (NPI 1750755849).
Provider details
- NPI number
- 1750755849
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CNP
- Sex
- Male
- Sole proprietor
- No
- License
- 2015039591 (MO)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 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
209 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) |
|---|---|---|
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 127 | $58 |
| Emergency Department Visit With Straightforward Medical Decision Making99282 | 41 | $34 |
| Emergency Department Visit for Problem That May Not Require Health Care Professional99281 | 25 | $9 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 16 | $99 |
Typical Medicare-allowed amounts for these services range $9–$99 (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.
Practice location
Mailing address
Additional practice locations (1)
- 12660 Lamplighter Square Shpg CtrSuite JSaint Louis, MO 63128-2761Phone: (314) 394-1379Fax: (314) 394-1377
Registry dates
- Enumerated
- 2015-11-30
- Last updated
- 2018-03-17
Frequently asked questions
- What is Carl Callahan's NPI number?
- Carl Callahan's National Provider Identifier (NPI) is 1750755849, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carl Callahan's specialty?
- Carl Callahan is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Carl Callahan located?
- Carl Callahan's practice location on file with NPPES is 13131 Tesson Ferry Rd Ste 220, Saint Louis, MO 63128-3887.
- What is Carl Callahan's phone number?
- The practice phone number listed in the NPPES registry for Carl Callahan is (314) 394-1379.
- Does Carl Callahan accept Medicare?
- Carl Callahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carl Callahan's NPI active?
- Yes — Carl Callahan's NPI (1750755849) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.