Colin Hardin, M.D.
NPI 1639459860 · Hematology & Oncology Physician · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Colin Hardin, M.D. is a Hematology & Oncology Physician provider in Grand Rapids, MI (NPI 1639459860).
Provider details
- NPI number
- 1639459860
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301111823 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
5,575 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 868 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 861 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 459 | $10 |
| Flow Cytometry Technique for Dna Or Cell Analysis, Each Additional Marker88185 | 446 | $21 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 400 | $121 |
| Lactate Dehydrogenase (enzyme) Level83615 | 212 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Acyclovir | 433 | 83 |
| Hydroxyurea | 228 | 45 |
| Lenalidomidebrand: Revlimid | 128 | 19 |
| Dexamethasone | 116 | 36 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 90 | 24 |
| Prednisone | 83 | 28 |
| Allopurinol | 78 | 37 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,482 across 95 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-08-19
- Last updated
- 2021-04-14
- Certified
- 2021-04-14
Frequently asked questions
- What is Colin Hardin's NPI number?
- Colin Hardin's National Provider Identifier (NPI) is 1639459860, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Colin Hardin's specialty?
- Colin Hardin is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Colin Hardin located?
- Colin Hardin's practice location on file with NPPES is 145 Michigan St Ne Ste 3100, Grand Rapids, MI 49503-2563.
- What is Colin Hardin's phone number?
- The practice phone number listed in the NPPES registry for Colin Hardin is (616) 954-9800.
- Does Colin Hardin accept Medicare?
- Colin Hardin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Colin Hardin's NPI active?
- Yes — Colin Hardin's NPI (1639459860) is active in the NPPES registry as of the last update on 2021-04-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.