DIANE TOWAKO SIEGEL (MD) – Ophthalmology Physician, NPI 1316443914
Ophthalmology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
396 OPHTHALMOLOGY in CO
Provider Addresses for DIANE TOWAKO SIEGEL (MD)
300 Exempla Cir Ste 120
Lafayette, CO 800263389
Phone: (303) 772-3300
Fax: (303) 682-3380
Type: Location
3000 Center Green Dr Ste 250
Boulder, CO 803012333
Phone: (303) 772-3300
Fax: (303) 682-3380
Type: Location
100 WOODRUFF CIRCLE SCHOOL OF MEDICINE STE 327
ATLANTA, GA 303220001
Phone: (404) 727-5658
Type: Mailing
Clifton Road Northeast, Emory Highlands, Druid Hills, DeKalb County, Georgia, 30329, United States
ATLANTA, GA 303221059
Phone: (404) 712-2000
Type: Location
1400 DRY CREEK DR
LONGMONT, CO 805036499
Phone: (303) 772-3300
Fax: (303) 682-3380
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 26 Open Payments records for all available years, with a total value of $989.
Total Amount is formed as General ($989) + Research ($0) + Ownership ($0) = $989.
Last reported payment date: 2024-10-01 • Largest payer in this snapshot: Alcon Vision LLC ($370).
Total Amount
$989
General + Research + Ownership
Payments
26
Total payment records
General Amount
$989
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-01
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Alcon Vision LLC | $370 |
| ABBVIE INC. | $181 |
| Bausch & Lomb Americas Inc. | $178 |
| Regeneron Healthcare Solutions, Inc. | $134 |
| Oyster Point Pharma, Inc. | $26 |
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: 2022-07-19
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 |
|---|---|---|---|---|
| I20220719000784 | I | Ophthalmology | CO | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 209 | 157 | $0 |
| 92136 | Measurement of corneal curvature and depth of eye | 171 | 111 | $0 |
| 66984 | Removal of cataract with insertion of prosthetic lens | 168 | 94 | $0 |
| 92004 | New patient complete exam of visual system | 137 | 137 | $0 |
| 92014 | Established patient complete exam of visual system | 123 | 116 | $0 |
Insurance plans in this area (ZIP 80026)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O P H T H A L M O L O G Y | OH | |
| - | CO | |
| O P H T H A L M O L O G Y | CO | |
| O P H T H A L M O L O G Y | CO | |
| O P H T H A L M O L O G Y | MD | |
| O P H T H A L M O L O G Y | MA | |
| O P H T H A L M O L O G Y | OH | |
| - | CO | |
| O P H T H A L M O L O G Y | CO | |
| O P H T H A L M O L O G Y | CO |
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