Greg Kleynberg, MD
NPI 1639193154 · Anesthesiology Physician · Midland, MI
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Greg Kleynberg, MD is a Anesthesiology Physician provider in Midland, MI (NPI 1639193154).
Provider details
- NPI number
- 1639193154
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301079713 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
107 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 30 | $41 |
| Anesthesia for Other Procedure on Urinary System Through Urethra00910 | 20 | $57 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 15 | $69 |
| Anesthesia for Other Procedure on Upper Abdomen00790 | 15 | $147 |
| Anesthesia for X-Ray Or Radiation Therapy01922 | 14 | $100 |
| Anesthesia for Other Procedure on Skin of Arms, Legs, and Front Body00400 | 13 | $73 |
Typical Medicare-allowed amounts for these services range $41–$147 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-27
- Last updated
- 2014-12-11
Frequently asked questions
- What is Greg Kleynberg's NPI number?
- Greg Kleynberg's National Provider Identifier (NPI) is 1639193154, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Greg Kleynberg's specialty?
- Greg Kleynberg is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Greg Kleynberg located?
- Greg Kleynberg's practice location on file with NPPES is 4000 Wellness Dr, Midland, MI 48670-2000.
- What is Greg Kleynberg's phone number?
- The practice phone number listed in the NPPES registry for Greg Kleynberg is (989) 839-3606.
- Does Greg Kleynberg accept Medicare?
- Greg Kleynberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Greg Kleynberg's NPI active?
- Yes — Greg Kleynberg's NPI (1639193154) is active in the NPPES registry as of the last update on 2014-12-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.