Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Steven Grundfast, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1710971049

Steven Grundfast, MD is registered under Pulmonary Disease in Middletown, New York. Graduated from Hahnemann University College of Medicine in 1996, 30 years ago. Practices with Crystal Run Healthcare Physicians LLP, a 366-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
30
Trained at
Hahnemann University College of Medicine
Licensed in
NY
In the registry since
2005
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

155 Crystal Run Rd
Middletown, NY 10941-4028
Phone: (845) 703-6999
Fax: (845) 703-6297
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 210221 (NY)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 210221 (NY)
Sleep Medicine (Internal Medicine) Physician Taxonomy 207RS0012X · Licence 210221 (NY)

Record details

NPI number1710971049
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 1, 2005
Last updated in NPPESSeptember 9, 2020
Certification dateSeptember 9, 2020

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolHAHNEMANN UNIVERSITY COLLEGE OF MEDICINE
Graduated 1996 (30 years in practice)
Group practice Crystal Run Healthcare Physicians Llp — 366 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients786
Services billed 3,033 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Crystal Run Healthcare Physicians LLP

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 366 clinicians in the practice; 12 are shown here.

Other providers in Middletown