Douglas Retzer, CRNA
NPI 1376537803 · Certified Registered Nurse Anesthetist · Rapid City, SD
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Retzer, CRNA is a Certified Registered Nurse Anesthetist provider in Rapid City, SD (NPI 1376537803).
Provider details
- NPI number
- 1376537803
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Male
- License
- R028354 (SD)
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
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
600 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) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 435 | $100 |
| Anesthesia for Procedure on Eyelid00103 | 67 | $143 |
| Anesthesia for Other Procedure on Eye00140 | 51 | $129 |
| Anesthesia for Retinal Surgery00145 | 47 | $159 |
Typical Medicare-allowed amounts for these services range $100–$159 (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
- 2005-09-12
- Last updated
- 2007-07-08
Frequently asked questions
- What is Douglas Retzer's NPI number?
- Douglas Retzer's National Provider Identifier (NPI) is 1376537803, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Retzer's specialty?
- Douglas Retzer is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Douglas Retzer located?
- Douglas Retzer's practice location on file with NPPES is 216 Anamaria Dr, Rapid City, SD 57701-7366.
- What is Douglas Retzer's phone number?
- The practice phone number listed in the NPPES registry for Douglas Retzer is (605) 721-0337.
- Does Douglas Retzer accept Medicare?
- Douglas Retzer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Retzer's NPI active?
- Yes — Douglas Retzer's NPI (1376537803) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.