Gregory R. Blaha, MD, PHD
Ophthalmology Physician · Peabody, MA
Gregory R. Blaha, MD, PHD is an ophthalmology physician with a practice address in Peabody, Massachusetts, and NPI 1902998776, issued on Sep 29, 2006. Check the license (Massachusetts 221050, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Gregory R. Blaha
- Credential
- MD, PHD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 221050 MA
Self-reported in NPPES; status is on the state search - Practice location
- One Essex Center Drive, Peabody, MA 01960
- Phone
- (978) 538-4400
- Enumerated
- Sep 29, 2006
- Record last updated
- May 10, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (978) 538-4724
- Medicaid ID
- 110037878A MA
- Medicare enrollment
- Enrolled (PECOS I20040715000663); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 2000
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Massachusetts → Look up another NPI →
Also registered at One Essex Center Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory R. Blaha in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 221050Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average ophthalmology physician in 2024
580 Medicare Part D claims for 166 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Prednisolone Acetate191 claims
- Ofloxacin92 claims
- Ketorolac Tromethamine73 claims
- Dorzolamide-Timolol58 claims
- Brimonidine Tartrate40 claims
- Bromfenac Sodium33 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 91.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $951.72
3 payments; by number, the most common kind was food and beverage; the largest payer was Beaver-Visitec International, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- John Gurley MD PCManchester, MA
- Lahey Clinic IncPeabody, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory R. Blaha among 791 ophthalmology physician records in Massachusetts
Gregory R. Blaha, MD, PHD is one of 791 ophthalmology physician records with a practice address in Massachusetts. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 23% of them.
- NPI issued2006 · 23% of these records are older, 48% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2000 · median 2002 among the 518 with a school on file
- Record last updated2019 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Massachusetts
There are 791 ophthalmology physician records in Massachusetts.
All 791 in Massachusetts → Every provider in Peabody → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Shaunt Fereshetian, MDPeabody, MA 019601356910061
- Susan Macdonald, M.D.Peabody, MA 019601972695138
- Namrata Nandakumar, MDPeabody, MA 019601932364817
- William Orenberg, MDPeabody, MA 019601568544344
- Richard Rodman, M.D.Peabody, MA 019601588623888
- Shiyoung Roh, M.D.Peabody, MA 019601871684795
- Jeffrey Sorkin, MDPeabody, MA 019601639248305
- John Weiter, MD PHDPeabody, MA 019601992795421
Common questions
What is Gregory R. Blaha, MD, PHD's NPI number?
Gregory R. Blaha, MD, PHD's National Provider Identifier (NPI) is 1902998776, issued on Sep 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory R. Blaha, MD, PHD located?
The NPPES record lists a practice address at One Essex Center Drive, Peabody, MA, 01960. Phone: (978) 538-4400. Providers update this record themselves, so call before visiting.
How can I verify Gregory R. Blaha, MD, PHD's license?
NPPES lists Massachusetts license number 221050, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory R. Blaha, MD, PHD prescribe under Medicare Part D?
In 2024, Gregory R. Blaha, MD, PHD had 580 Medicare Part D claims for 166 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Gregory R. Blaha, MD, PHD's MIPS final score?
The 2023 MIPS final score is 91.4 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.