Gregory Oldham, M.D.
NPI 1205065646 · Ophthalmology Physician · West Chester, PA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Oldham, M.D. is a Ophthalmology Physician provider in West Chester, PA (NPI 1205065646).
Provider details
- NPI number
- 1205065646
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD450544 (PA)
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
16 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
6,047 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) |
|---|---|---|
| Photography of the Retina92250 | 909 | $38 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 770 | $136 |
| Exam of Visual Field With Extended Testing92083 | 621 | $67 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 502 | $519 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 476 | $97 |
| Exam of the Internal Drainage System of Eye92020 | 437 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,066 | 295 |
| Timolol Maleate | 431 | 138 |
| Prednisolone Acetate | 422 | 316 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 395 | 123 |
| Bimatoprostbrand: Lumigan | 229 | 70 |
| Dorzolamide Hcl | 148 | 49 |
| Brimonidine Tartrate | 128 | 43 |
| Erythromycin Base |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$401 across 18 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
- 2009-07-07
- Last updated
- 2020-10-10
- Certified
- 2020-10-10
Frequently asked questions
- What is Gregory Oldham's NPI number?
- Gregory Oldham's National Provider Identifier (NPI) is 1205065646, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Oldham's specialty?
- Gregory Oldham is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Oldham located?
- Gregory Oldham's practice location on file with NPPES is 915 Old Fern Hill Rd Bldg B Ste 200, West Chester, PA 19380-4269.
- What is Gregory Oldham's phone number?
- The practice phone number listed in the NPPES registry for Gregory Oldham is (610) 696-1230.
- Does Gregory Oldham accept Medicare?
- Gregory Oldham is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Oldham's NPI active?
- Yes — Gregory Oldham's NPI (1205065646) is active in the NPPES registry as of the last update on 2020-10-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.