Ryan Robert Maciel , RDN
Dietitian, Registered β’ Cambridge, MA
91 Sidney St
Cambridge, MA 021394277
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
91 Sidney St
Cambridge, MA 021394277
What Public CMS Data Show
Dietitian, Registered: NPPES taxonomy is a reported classification, not proof of board certification.
NPI first issued
2018
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, CMS release of October 2, 2026; Medicare.gov, βDoes your provider accept Medicare as full payment?β
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, CMS release of October 2, 2026.
Compared with the same specialty in Cambridge and Massachusetts
70 active clinicians are listed under Dietitian, Registered with a practice address in Cambridge, MA (2,274 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Cambridge
2.9% of these 70 clinicians have the CMS telehealth indicator.
7.1% of these 70 clinicians are listed by CMS as accepting Medicare assignment.
Sources: CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 133V00000X
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
NPI status registered as active in NPPES database
Registered at 91 SIDNEY ST, CAMBRIDGE, MA 021394277 (Tel: 8572423633)
Registered at 112 SHERMAN RD, CHESTNUT HILL, MA 024673179
Recorded as RYAN MACIEL, RDN
Dietitian, Registered (license number reported to NPPES: MA 4383)
NPI status registered as active in NPPES database
Registered at 91 SIDNEY ST, CAMBRIDGE, MA 021394277 (Tel: 8572423633)
Registered at 112 SHERMAN RD, CHESTNUT HILL, MA 024673179
Recorded as RYAN MACIEL, RDN
Dietitian, Registered (license number reported to NPPES: MA 4383)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Dietitian, Registereds in Cambridge
Healthcare providers in CambridgeMailing Address
112 Sherman Rd
Chestnut Hill, MA 024673179