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

Mark Arthur Vollenweider, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1356331698

Mark Arthur Vollenweider, MD is registered under Pulmonary Disease in Orlando, Florida. Qualified in 2002, 24 years ago. Practices with Orlando Health Medical Group Inc, a 2,137-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Florida and Kentucky.

Years since qualifying
24
Licensed in
FL, KY
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

1222 S Orange Ave
Orlando, FL 32806-1215
Phone: (321) 841-7856
Fax: (321) 843-6432
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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 ME103507 (FL)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence ME103507 (FL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 39482 (KY)

Record details

NPI number1356331698
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 27, 2005
Last updated in NPPESJune 24, 2021
Certification dateJune 24, 2021

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Orlando Health Medical Group Inc — 2137 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 patients228
Services billed 859 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Consulting Fee $10,750 4 payments
Travel and Lodging $991 2 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $520 5 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Orlando Health Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2137 clinicians in the practice; 12 are shown here.

Other providers in Orlando