Margaret Hay, MD
NPI 1003347683 · Pulmonary Disease Physician · Denver, CO
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Hay, MD is a Pulmonary Disease Physician provider in Denver, CO (NPI 1003347683).
Provider details
- NPI number
- 1003347683
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 71056 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 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
364 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 114 | $207 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 94 | $116 |
| Test to Examine How Well the Lungs Exchange Gases94729 | 50 | $27 |
| Test to Determine Lung Volumes Using Gas Dilution Or Washout94727 | 48 | $24 |
| Test to Measure Rate of Airflow94375 | 44 | $24 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 14 | $170 |
Typical Medicare-allowed amounts for these services range $24–$207 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$399 across 13 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
- 2017-03-24
- Last updated
- 2023-08-30
- Certified
- 2023-08-30
Frequently asked questions
- What is Margaret Hay's NPI number?
- Margaret Hay's National Provider Identifier (NPI) is 1003347683, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Hay's specialty?
- Margaret Hay is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Hay located?
- Margaret Hay's practice location on file with NPPES is 1601 E 19th Ave Ste 3100, Denver, CO 80218-1239.
- What is Margaret Hay's phone number?
- The practice phone number listed in the NPPES registry for Margaret Hay is (303) 863-0300.
- Does Margaret Hay accept Medicare?
- Margaret Hay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Hay's NPI active?
- Yes — Margaret Hay's NPI (1003347683) is active in the NPPES registry as of the last update on 2023-08-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.