Michael Harshman, O.D.
NPI 1598844946 · Optometrist · Decatur, IN
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Harshman, O.D. is a Optometrist provider in Decatur, IN (NPI 1598844946).
Provider details
- NPI number
- 1598844946
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 18002484 (IN)
Specialties & taxonomies
Eye and Vision Services Providers
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
376 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) |
|---|---|---|
| Established Patient Complete Exam of Visual System92014 | 150 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 143 | $73 |
| Removal of Recurring Cataract in Lens Capsule Using a Laser66821 | 48 | $51 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 24 | $87 |
| New Patient Complete Exam of Visual System92004 | 11 | $97 |
Typical Medicare-allowed amounts for these services range $51–$98 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 132 | 22 |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 101 | 71 |
| Ketorolac Tromethamine | 100 | 53 |
| Epinastine Hcl | 48 | 20 |
| Timolol Maleate | 39 | — |
| Loteprednol Etabonatebrand: Lotemax Sm | 25 | — |
| Fluorometholone | 17 | — |
| Ofloxacin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-06
- Last updated
- 2008-07-31
Frequently asked questions
- What is Michael Harshman's NPI number?
- Michael Harshman's National Provider Identifier (NPI) is 1598844946, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Harshman's specialty?
- Michael Harshman is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Michael Harshman located?
- Michael Harshman's practice location on file with NPPES is 815 South 13th St., Decatur, IN 46733.
- What is Michael Harshman's phone number?
- The practice phone number listed in the NPPES registry for Michael Harshman is (260) 724-4111.
- Does Michael Harshman accept Medicare?
- Michael Harshman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Harshman's NPI active?
- Yes — Michael Harshman's NPI (1598844946) is active in the NPPES registry as of the last update on 2008-07-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.