ISAIAH W GIESE (M.D.) – Ophthalmology Physician, NPI 1235544933
Ophthalmology Physician
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Profile Insights
NPPES metrics only — not quality of care.
801 OPHTHALMOLOGY in MA
Provider Addresses for ISAIAH W GIESE (M.D.)
243 CHARLES ST
BOSTON, MA 021143002
Phone:
Type: Mailing
255 Park Ave Ste 606
Worcester, MA 016091930
Phone: (508) 753-1032
Fax: (508) 755-5705
Type: Location
74 Main St
Gardner, MA 014402634
Phone: (978) 632-3930
Fax: (978) 632-3158
Type: Location
100 Powdermill Rd
Acton, MA 017205932
Phone: (978) 897-7212
Fax: (978) 461-0345
Type: Location
413 Main St
Athol, MA 013311842
Phone: (978) 249-4209
Fax: (978) 249-4102
Type: Location
479 OLD UNION TPKE
LANCASTER, MA 015233029
Phone: (978) 537-3900
Fax: (978) 537-6030
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $34.
Total Amount is formed as General ($34) + Research ($0) + Ownership ($0) = $34.
Last reported payment date: 2023-12-21 • Largest payer in this snapshot: Horizon Therapeutics plc ($34).
Total Amount
$34
General + Research + Ownership
Payments
2
Total payment records
General Amount
$34
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-12-21
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Horizon Therapeutics plc | $34 |
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: 2021-12-10
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 |
|---|---|---|---|---|
| I20211210000286 | I | Ophthalmology | MA | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 310 | 239 | $0 |
| 92285 | Photography of content of eyes | 207 | 194 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 103 | 88 | $0 |
| 92014 | Established patient complete exam of visual system | 80 | 79 | $0 |
| 92081 | Exam of visual field with limited testing | 74 | 71 | $0 |
Insurance plans in this area (ZIP 02114)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O P H T H A L M O L O G Y | MA | |
| O P T O M E T R Y | MA | |
| - | MA | |
| O P T O M E T R Y | MA | |
| O P T O M E T R Y | MA | |
| O P T O M E T R Y | MA | |
| O P T O M E T R Y | MA | |
| O P H T H A L M O L O G Y | MA | |
| O P T O M E T R Y | MA | |
| O P T O M E T R Y | MA |
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