DR. GREGORY WARREN OLDHAM (M.D.) – Ophthalmology Physician, NPI 1205065646
Ophthalmology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,144 OPHTHALMOLOGY in PA
Provider Addresses for DR. GREGORY WARREN OLDHAM (M.D.)
915 OLD FERN HILL RD BLDG B STE 200
WEST CHESTER, PA 193804269
Phone: (610) 696-1230
Fax: (610) 918-0803
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 42 Open Payments records for all available years, with a total value of $1,010.
Total Amount is formed as General ($1,010) + Research ($0) + Ownership ($0) = $1,010.
Last reported payment date: 2024-12-07 • Largest payer in this snapshot: Alcon Vision LLC ($389).
Total Amount
$1,010
General + Research + Ownership
Payments
42
Total payment records
General Amount
$1,010
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-07
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Alcon Vision LLC | $389 |
| ABBVIE INC. | $364 |
| Bausch & Lomb Americas Inc. | $62 |
| Rayner Intraocular Lenses Limited | $44 |
| Glaukos Corporation | $39 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2014-07-14
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20140714001490 | I | Ophthalmology | PA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 92250 | Photography of the retina | 883 | 857 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 828 | 763 | $0 |
| 92083 | Exam of visual field with extended testing | 620 | 610 | $0 |
| 92136 | Measurement of corneal curvature and depth of eye | 595 | 379 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 535 | 459 | $0 |
Insurance plans in this area (ZIP 19380)
Loading plans...
Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| OPHTHALMOLOGY | PA | 92012 | Eye and medical examination for diagnosis and treatment, established patient | 688 | 460 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| O P H T H A L M O L O G Y | PA | |
| O P T O M E T R Y | PA | |
| O P H T H A L M O L O G Y | PA | |
| O P T O M E T R Y | PA | |
| O P H T H A L M O L O G Y | PA | |
| O P T O M E T R Y | PA | |
| O P H T H A L M O L O G Y | PA | |
| O P T O M E T R Y | PA | |
| O P H T H A L M O L O G Y | PA | |
| O P H T H A L M O L O G Y | PA |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.