Heidi Houlihan, MD
NPI 1811937683 · Ophthalmology Physician · Chico, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Heidi Houlihan, MD is a Ophthalmology Physician provider in Chico, CA (NPI 1811937683).
Provider details
- NPI number
- 1811937683
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A87124 (CA)
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
20 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
6,574 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 Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,596 | $136 |
| Microfluid Analysis of Tears83861 | 778 | $22 |
| Imaging of Retina92134 | 761 | $43 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 729 | $97 |
| Photography of the Retina92250 | 431 | $39 |
| Established Patient Complete Exam of Visual System92014 | 361 | $135 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 316 | 102 |
| Timolol Maleate | 120 | 31 |
| Fluorometholone | 83 | 55 |
| Bimatoprostbrand: Lumigan | 72 | 18 |
| Prednisolone Acetate | 57 | 25 |
| Brimonidine Tartrate | 53 | 14 |
| Doxycycline Hyclate | 41 | 16 |
| Erythromycin Basebrand: Erythromycin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$627 across 20 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
- 2006-06-08
- Last updated
- 2023-07-25
- Certified
- 2022-12-21
Frequently asked questions
- What is Heidi Houlihan's NPI number?
- Heidi Houlihan's National Provider Identifier (NPI) is 1811937683, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Heidi Houlihan's specialty?
- Heidi Houlihan is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Heidi Houlihan located?
- Heidi Houlihan's practice location on file with NPPES is 3401 Esplanade, Chico, CA 95973-0207.
- What is Heidi Houlihan's phone number?
- The practice phone number listed in the NPPES registry for Heidi Houlihan is (530) 895-1727.
- Does Heidi Houlihan accept Medicare?
- Heidi Houlihan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Heidi Houlihan's NPI active?
- Yes — Heidi Houlihan's NPI (1811937683) is active in the NPPES registry as of the last update on 2023-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.