Dr. Mark B Letterman , DC, OMD
Chiropractor • Rehoboth Beach, DE
70 Rehoboth Ave
Rehoboth Beach, DE 199712171
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
70 Rehoboth Ave
Rehoboth Beach, DE 199712171
What Public CMS Data Show
Chiropractor: NPPES taxonomy is a reported classification, not proof of board certification.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
NPI first issued
2025
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Rehoboth Beach and Delaware
9 active clinicians are listed under Chiropractor with a practice address in Rehoboth Beach, DE (238 in Delaware).
Addresses are self-reported to NPPES and may be out of date.
Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-07-14NUCC Taxonomy Code: 111N00000X
A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.
NUCC Taxonomy Code: 171100000X
An acupuncturist is a person who performs ancient therapy for alleviation of pain, anesthesia and treatment of some diseases. Acupuncturists use long, fine needles inserted into specific points in order to treat painful conditions or produce anesthesia.
Career & Practice History
NPI enumerated July 14, 2025.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from August 2025 to August 2026.
NPI Administrative Meta
Other Chiropractors in Rehoboth Beach
Mailing Address
1803 Slaughter Station Rd
Hartly, DE 199533222