Mark Slootsky, M.D.
Pulmonary Disease Physician · Walnut Creek, CA
Mark Slootsky, M.D. is a pulmonary disease physician with a practice address in Walnut Creek, California, and NPI 1396124749, issued on May 19, 2015. Check the license (California A145895, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Slootsky
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License numbers
- A145895 CA
295561 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2700 Ygnacio Valley RD Ste 100, Walnut Creek, CA 94598
- Phone
- (925) 939-3050
- Enumerated
- May 19, 2015
- Record last updated
- May 20, 2024
- Fax
- (925) 939-3057
- Medicare enrollment
- Enrolled (PECOS I20210608002625); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 in California → Look up another NPI →
Also registered at 2700 Ygnacio Valley RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maryam Amini, MDFamily Medicine Physician1245402072
- Elvio Ardilles, MDPulmonary Disease Physician1518905322
- Vala Berjis, M.D.Pulmonary Disease Physician1023135761
- Anne Grzegorczyk, M.D.Pulmonary Disease Physician1720434004
- George Juan, M.D.Pulmonary Disease Physician1619273364
- Matthew LyonsPulmonary Disease Physician1457714933
Verify Mark Slootsky in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A145895Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
858 Medicare Part D claims for 157 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa95 claims
- Anoro Ellipta79 claims
- Trelegy Ellipta77 claims
- Prednisone54 claims
- Ofev33 claims
- Eliquis25 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 99.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $624.95
14 payments; by number, the most common kind was food and beverage; the largest payer was Inspire Medical Systems, Inc. The 8,806 providers of this specialty with any payment received $5,159.88 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
- Muir Pulmonary Critical CareWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Slootsky among 1,443 pulmonary disease physician records in California
Mark Slootsky, M.D. is one of 1,443 pulmonary disease physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 83% of them.
- NPI issued2015 · 83% of these records are older, 14% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2015 · median 2002 among the 1,061 with a school on file
- Record last updated2024 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in California
There are 1,443 pulmonary disease physician records in California.
All 1,443 in California → Every provider in Walnut Creek → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Elvio Ardilles, MDWalnut Creek, CA 945981518905322
- Vala Berjis, M.D.Walnut Creek, CA 945981023135761
- Ka Ling (karin) Cheung, M.D.Walnut Creek, CA 945981881643831
- Anne Grzegorczyk, M.D.Walnut Creek, CA 945981720434004
- George Juan, M.D.Walnut Creek, CA 945981619273364
- Matthew LyonsWalnut Creek, CA 945981457714933
- Ming-Tyh Maa, M.D.Walnut Creek, CA 945981073718722
- Frederick Nachtwey, M.D.Walnut Creek, CA 945981710901822
Common questions
What is Mark Slootsky, M.D.'s NPI number?
Mark Slootsky, M.D.'s National Provider Identifier (NPI) is 1396124749, issued on May 19, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mark Slootsky, M.D. located?
The NPPES record lists a practice address at 2700 Ygnacio Valley RD Ste 100, Walnut Creek, CA, 94598. Phone: (925) 939-3050. Providers update this record themselves, so call before visiting.
How can I verify Mark Slootsky, M.D.'s license?
NPPES lists California license number A145895, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Slootsky, M.D. prescribe under Medicare Part D?
In 2024, Mark Slootsky, M.D. had 858 Medicare Part D claims for 157 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
What is Mark Slootsky, M.D.'s MIPS final score?
The 2023 MIPS final score is 99.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.