Frederick Fiedler, M.D.
NPI 1598733545 · Internal Medicine Physician · Memphis, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frederick Fiedler, M.D. is a Internal Medicine Physician provider in Memphis, TN (NPI 1598733545).
Provider details
- NPI number
- 1598733545
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- MD16945 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
1,479 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 | 1,284 | $72 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 129 | $119 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 66 | $45 |
Typical Medicare-allowed amounts for these services range $45–$119 (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
Registry dates
- Enumerated
- 2006-03-08
- Last updated
- 2007-07-09
Frequently asked questions
- What is Frederick Fiedler's NPI number?
- Frederick Fiedler's National Provider Identifier (NPI) is 1598733545, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frederick Fiedler's specialty?
- Frederick Fiedler is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Frederick Fiedler located?
- Frederick Fiedler's practice location on file with NPPES is 6263 Poplar Ave, Memphis, TN 38119-4736.
- What is Frederick Fiedler's phone number?
- The practice phone number listed in the NPPES registry for Frederick Fiedler is (901) 761-6157.
- Does Frederick Fiedler accept Medicare?
- Frederick Fiedler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frederick Fiedler's NPI active?
- Yes — Frederick Fiedler's NPI (1598733545) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.