Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William Mazalewski, DO

Individual provider Emergency Medicine Physician · NPI 1841652948

William Mazalewski, DO is a Pulmonary Disease in Sarasota, Florida. Graduated from Lake Erie College of Osteopathic Medicine, Erie in 2016, 10 years ago. Practices with Smh Physician Services Inc, a 774-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Florida and Louisiana.

Years since qualifying
10
Trained at
Lake Erie College of Osteopathic Medicine, Erie
Licensed in
FL, LA
In the registry since
2016
Specialties on file
4
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1921 Waldemere St Ste 705
Sarasota, FL 34239-2913
Phone: (941) 366-5864
Fax: (941) 316-9819
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 200 Healthcare Way Unit 102, North Venice, FL 34275-3670 — (941) 366-5864
  • 2600 Laurel Rd E, North Venice, FL 34275-3226 — (941) 917-9000
  • 1700 S Tamiami Trl, Sarasota, FL 34239-3555 — (941) 917-9000

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence OS15007 (FL)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 312508 (LA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence OS15007 (FL)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1841652948
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 28, 2016
Last updated in NPPESMay 12, 2022
Certification dateMay 12, 2022
Mailing address1921 Waldemere St Ste 705, Sarasota, FL 34239-2913

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolLAKE ERIE COLLEGE OF OSTEOPATHIC MEDICINE, ERIE
Graduated 2016 (10 years in practice)
Group practice Smh Physician Services Inc — 774 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

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