Gregory S. Schlessinger, MD
Nephrology Physician · Lone Tree, CO
Gregory S. Schlessinger, MD is a nephrology physician with a practice address in Lone Tree, Colorado, and NPI 1255313441, issued on Nov 15, 2005. Check the license (Colorado 37524, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory S. Schlessinger
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- 37524 CO
13028C WY
Self-reported in NPPES; status is on the state search - Practice location
- 9777 S Yosemite St Ste 110, Lone Tree, CO 80124
- Phone
- (720) 696-0852
- Enumerated
- Nov 15, 2005
- Record last updated
- Apr 4, 2023
- Fax
- (720) 696-0892
- Medicaid ID
- 64939766 CO
- Medicare enrollment
- Enrolled (PECOS I20240801001306); accepts Medicare assignment
- Medical or professional school
- Vanderbilt University School Of Medicine, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 9777 S Yosemite St Ste 110
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Geoffrey Block, MDNephrology Physician1861474140
- Andrew Brookens, M.D.Nephrology Physician1396035341
- Steven Fabian, M.D.Nephrology Physician1942315668
- Eileen Fish, MDNephrology Physician1982747374
- Samantha Hall, MASSAGE THERAPISTMassage Therapist1366082430
- Maria Mercier, NPNurse Practitioner1790733624
Verify Gregory S. Schlessinger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 37524Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average nephrology physician in 2024
645 Medicare Part D claims for 104 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Losartan Potassium71 claims
- Furosemide61 claims
- Cinacalcet Hcl50 claims
- Farxiga48 claims
- Jardiance38 claims
- Calcitriol33 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $515.08
17 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Rocky Mountain Kidney Care LLCOlathe, KS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nephrology Physician providers in Colorado
There are 182 nephrology physician records in Colorado.
Other nephrology physician records in Colorado
- Joseph Abdallah, M.D.Westminster, CO1306843602
- Rihab Ahmed-Taha, MDLakewood, CO1518164300
- Nilesh Ahuja, MDFort Collins, CO1750437331
- Katherine Akers, M.D.Westminster, CO1497011944
- Yisfalem Alamdew, M.D.Parker, CO1699921817
- Mark Albright, MDColorado Springs, CO1104824259
- Daniel Andreoli, M.D.Arvada, CO1093077604
- Michael Anger, MDWestminster, CO1720079205
- Fatima Ballout, M.D.Lakewood, CO1881043131
- Anip Bansal, M.D.Aurora, CO1467607655
Common questions
What is Gregory S. Schlessinger, MD's NPI number?
Gregory S. Schlessinger, MD's National Provider Identifier (NPI) is 1255313441, issued on Nov 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory S. Schlessinger, MD located?
The NPPES record lists a practice address at 9777 S Yosemite St Ste 110, Lone Tree, CO, 80124. Phone: (720) 696-0852. Providers update this record themselves, so call before visiting.
How can I verify Gregory S. Schlessinger, MD's license?
NPPES lists Colorado license number 37524, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory S. Schlessinger, MD prescribe under Medicare Part D?
In 2024, Gregory S. Schlessinger, MD had 645 Medicare Part D claims for 104 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.