GREGORY J STREFF (DO) – Pulmonary Disease Physician, NPI 1558314005
Pulmonary Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
657 PULMONARY DISEASE in MI
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Provider Addresses for GREGORY J STREFF (DO)
9450, South Saginaw Road, Grand Blanc, Genesee County, Michigan, 48439, United States
SUITE E
GRAND BLANC, MI 484398206
Phone: (810) 695-4000
Fax: (810) 695-4055
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 199 Open Payments records for all available years, with a total value of $4,341.
Total Amount is formed as General ($4,341) + Research ($0) + Ownership ($0) = $4,341.
Last reported payment date: 2024-12-20 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($724).
Total Amount
$4,341
General + Research + Ownership
Payments
199
Total payment records
General Amount
$4,341
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-20
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2004-04-26
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 |
|---|---|---|---|---|
| I20040426001827 | I | Pulmonary Disease | MI | 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 | 884 | 464 | $0 |
| 94060 | Test to measure expiratory airflow and volume changes before and after medication administration | 240 | 238 | $0 |
| 94729 | Test to examine how well the lungs exchange gases | 238 | 236 | $0 |
| 94726 | Test to determine lung volumes using sensors | 213 | 213 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 85 | 85 | $0 |
Insurance plans in this area (ZIP 48439)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PULMONARY DISEASE | MI | 94060 | Measurement and graphic recording of the amount and speed of breathed air, before and following medication administration | 67 | 67 |
| PULMONARY DISEASE | MI | 94727 | Determination of lung volumes using gas dilution or washout | 91 | 91 |
| PULMONARY DISEASE | MI | 95811 | Sleep monitoring of patient (6 years or older) in sleep lab with continued pressured respiratory assistance by mask or breathing tube | 51 | 51 |
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