John Hiemstra, D.O.
NPI 1639102502 · Family Medicine Physician · Lynden, WA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hiemstra, D.O. is a Family Medicine Physician provider in Lynden, WA (NPI 1639102502).
Provider details
- NPI number
- 1639102502
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- OP00002028 (WA)
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
19 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
3,256 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 559 | $9 |
| Blood Test, Clotting Time85610 | 450 | $4 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 394 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 349 | $13 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 316 | $8 |
| Hemoglobin A1c Level83036 | 251 | $10 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 123 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 700 | 174 |
| Atorvastatin Calcium | 545 | 140 |
| Levothyroxine Sodium | 403 | 101 |
| Omeprazole | 392 | 105 |
| Losartan Potassium | 354 | 93 |
| Metformin Hcl | 324 | 86 |
| Sertraline Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-07
- Last updated
- 2026-04-27
- Certified
- 2026-04-27
Frequently asked questions
- What is John Hiemstra's NPI number?
- John Hiemstra's National Provider Identifier (NPI) is 1639102502, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hiemstra's specialty?
- John Hiemstra is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Hiemstra located?
- John Hiemstra's practice location on file with NPPES is 1610 Grover St Ste D1, Lynden, WA 98264-1539.
- What is John Hiemstra's phone number?
- The practice phone number listed in the NPPES registry for John Hiemstra is (360) 354-1333.
- Does John Hiemstra accept Medicare?
- John Hiemstra is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Hiemstra's NPI active?
- Yes — John Hiemstra's NPI (1639102502) is active in the NPPES registry as of the last update on 2026-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.