Donald Allyn, M.D.
NPI 1558302893 · Specialist · Hanford, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Donald Allyn, M.D. is a Specialist provider in Hanford, CA (NPI 1558302893).
Provider details
- NPI number
- 1558302893
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G21696 (CA)
Specialties & taxonomies
Other Service 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
116 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) |
|---|---|---|
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 47 | $128 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 30 | $92 |
| Treatment of Upper End of Broken Thigh Bone With Placement of Stabilizing Device Or Prosthetic Replacement27236 | 14 | $1,177 |
| Replacement of Knee Joint, Both Sides of Knee27447 | 13 | $1,255 |
| Treatment of Broken Neck of Thigh Bone With Bone Implant27245 | 12 | $1,205 |
Typical Medicare-allowed amounts for these services range $92–$1,255 (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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ibuprofen | 112 | 65 |
| Cephalexin | 92 | 52 |
| Hydromorphone Hcl | 49 | 34 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 37 | 13 |
| Naloxone Hcl | 32 | 31 |
| Ondansetronbrand: Ondansetron Odt | 29 | 27 |
| Clindamycin Hcl | 18 | 18 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-09
- Last updated
- 2020-09-23
- Certified
- 2020-09-23
Frequently asked questions
- What is Donald Allyn's NPI number?
- Donald Allyn's National Provider Identifier (NPI) is 1558302893, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Allyn's specialty?
- Donald Allyn is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Donald Allyn located?
- Donald Allyn's practice location on file with NPPES is 125 Mall Dr., Hanford, CA 93230.
- What is Donald Allyn's phone number?
- The practice phone number listed in the NPPES registry for Donald Allyn is (559) 584-3000.
- Does Donald Allyn accept Medicare?
- Donald Allyn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Donald Allyn's NPI active?
- Yes — Donald Allyn's NPI (1558302893) is active in the NPPES registry as of the last update on 2020-09-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.