Gregory Blaha, MD, PHD
NPI 1902998776 · Ophthalmology Physician · Peabody, MA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Blaha, MD, PHD is a Ophthalmology Physician provider in Peabody, MA (NPI 1902998776).
Provider details
- NPI number
- 1902998776
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 221050 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
5,683 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) |
|---|---|---|
| Imaging of Retina92134 | 1,429 | $25 |
| Injection of Drug Into Eye67028 | 823 | $100 |
| Imaging of Retina92134 | 731 | $42 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 640 | $67 |
| Injection of Drug Into Eye67028 | 444 | $126 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 337 | $94 |
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 |
|---|---|---|
| Prednisolone Acetate | 191 | 110 |
| Ofloxacin | 92 | 74 |
| Ketorolac Tromethamine | 73 | 28 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 58 | 23 |
| Brimonidine Tartrate | 40 | 12 |
| Bromfenac Sodium | 33 | — |
| Timolol Maleate | 26 | 11 |
| Latanoprost | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$952 across 3 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
- 2006-09-29
- Last updated
- 2019-05-10
Frequently asked questions
- What is Gregory Blaha's NPI number?
- Gregory Blaha's National Provider Identifier (NPI) is 1902998776, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Blaha's specialty?
- Gregory Blaha is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Blaha located?
- Gregory Blaha's practice location on file with NPPES is One Essex Center Drive, Peabody, MA 01960-2901.
- What is Gregory Blaha's phone number?
- The practice phone number listed in the NPPES registry for Gregory Blaha is (978) 538-4400.
- Does Gregory Blaha accept Medicare?
- Gregory Blaha is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Blaha's NPI active?
- Yes — Gregory Blaha's NPI (1902998776) is active in the NPPES registry as of the last update on 2019-05-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.