Diane Siegel, MD
NPI 1316443914 · Ophthalmology Physician · Longmont, CO
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diane Siegel, MD is a Ophthalmology Physician provider in Longmont, CO (NPI 1316443914).
Provider details
- NPI number
- 1316443914
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- DR.0068751 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,257 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) |
|---|---|---|
| Established Patient Complete Exam of Visual System92014 | 212 | $128 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 184 | $129 |
| Photography of the Retina92250 | 147 | $37 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 133 | $509 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 124 | $41 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 104 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 226 | 168 |
| Ketorolac Tromethamine | 67 | 48 |
| Latanoprost | 66 | 21 |
| Erythromycin Basebrand: Erythromycin | 54 | 37 |
| Cyclosporinebrand: Restasis | 47 | 20 |
| Fluorometholone | 38 | 37 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 32 | 31 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$361 across 12 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
Additional practice locations (2)
- 3000 Center Green Dr Ste 250Boulder, CO 80301-2333Phone: (303) 772-3300Fax: (303) 682-3380
- 300 Exempla Cir Ste 120Lafayette, CO 80026-3389Phone: (303) 772-3300Fax: (303) 682-3380
Registry dates
- Enumerated
- 2018-04-03
- Last updated
- 2023-06-28
- Certified
- 2023-06-28
Frequently asked questions
- What is Diane Siegel's NPI number?
- Diane Siegel's National Provider Identifier (NPI) is 1316443914, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diane Siegel's specialty?
- Diane Siegel is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Diane Siegel located?
- Diane Siegel's practice location on file with NPPES is 1400 Dry Creek Dr, Longmont, CO 80503-6499.
- What is Diane Siegel's phone number?
- The practice phone number listed in the NPPES registry for Diane Siegel is (303) 772-3300.
- Does Diane Siegel accept Medicare?
- Diane Siegel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diane Siegel's NPI active?
- Yes — Diane Siegel's NPI (1316443914) is active in the NPPES registry as of the last update on 2023-06-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.