Gregory Streff, DO
NPI 1558314005 · Pulmonary Disease Physician · Grand Blanc, MI
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Streff, DO is a Pulmonary Disease Physician provider in Grand Blanc, MI (NPI 1558314005).
Provider details
- NPI number
- 1558314005
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- License
- 5101008684 (MI)
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
1,638 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 | 752 | $120 |
| Test to Examine How Well the Lungs Exchange Gases94729 | 186 | $50 |
| Test to Measure Expiratory Airflow and Volume Changes Before and After Medication Administration94060 | 183 | $35 |
| Test to Determine Lung Volumes Using Sensors94726 | 141 | $50 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 103 | $85 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Montelukast Sodium | 276 | 123 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 208 | 121 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 192 | 75 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa Er | 97 | 46 |
| Pantoprazole Sodium | 91 | 46 |
| Prednisone | 90 | 60 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,330 across 106 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
- 2006-05-18
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Streff's NPI number?
- Gregory Streff's National Provider Identifier (NPI) is 1558314005, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Streff's specialty?
- Gregory Streff is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Streff located?
- Gregory Streff's practice location on file with NPPES is 9450 S Saginaw Rd, Grand Blanc, MI 48439-8206.
- What is Gregory Streff's phone number?
- The practice phone number listed in the NPPES registry for Gregory Streff is (810) 695-4000.
- Does Gregory Streff accept Medicare?
- Gregory Streff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Streff's NPI active?
- Yes — Gregory Streff's NPI (1558314005) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.