Mark Slootsky, M.D.
NPI 1396124749 · Pulmonary Disease Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Slootsky, M.D. is a Pulmonary Disease Physician provider in Walnut Creek, CA (NPI 1396124749).
Provider details
- NPI number
- 1396124749
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A145895 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 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
1,747 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 582 | $134 |
| Critical Care, First 30-74 Minutes99291 | 355 | $242 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 194 | $143 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 70 | $103 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 60 | $202 |
| Test for Exercise-Induced Lung Stress94618 | 51 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 95 | 42 |
| Umeclidinium Brm/Vilanterol Trbrand: Anoro Ellipta | 79 | 20 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 77 | 13 |
| Prednisone | 54 | 32 |
| Nintedanib Esylatebrand: Ofev | 33 | — |
| Apixabanbrand: Eliquis | 25 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$625 across 14 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
- 2015-05-19
- Last updated
- 2024-05-20
- Certified
- 2024-05-20
Frequently asked questions
- What is Mark Slootsky's NPI number?
- Mark Slootsky's National Provider Identifier (NPI) is 1396124749, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Slootsky's specialty?
- Mark Slootsky is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Slootsky located?
- Mark Slootsky's practice location on file with NPPES is 2700 Ygnacio Valley Rd Ste 100, Walnut Creek, CA 94598-3462.
- What is Mark Slootsky's phone number?
- The practice phone number listed in the NPPES registry for Mark Slootsky is (925) 939-3050.
- Does Mark Slootsky accept Medicare?
- Mark Slootsky is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Slootsky's NPI active?
- Yes — Mark Slootsky's NPI (1396124749) is active in the NPPES registry as of the last update on 2024-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.