Nathaniel Marcos Green
Registered Nurse • Pasadena, CA
100 W California Blvd
Pasadena, CA 911053010
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
100 W California Blvd
Pasadena, CA 911053010
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Registered Nurse: NPPES taxonomy is a reported classification, not proof of board certification.
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 Pasadena and California
64 active clinicians are listed under Registered Nurse with a practice address in Pasadena, CA (13,516 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Pasadena
0% of these 64 clinicians have the CMS telehealth indicator.
9.4% of these 64 clinicians are listed by CMS as accepting Medicare assignment.
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: 2025-07-08NUCC Taxonomy Code: 163W00000X
(1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive either a diploma from a hospital program, an associate degree in nursing (A.D.N.) or a Bachelor of Science degree in nursing (B.S.N.), who is licensed or certified by the state, and is practicing within the scope of that license or certification. R.N.'s assist patient in recovering and maintaining their physical or mental health. They assist physicians during treatments and examinations and administer medications. (2) A provider who is trained and educated in a formal nursing education program at an accredited school of nursing, passes a national certification examination, and is licensed by the state to practice nursing. The individual provides nursing services to patients or clients in areas such as health promotion, disease prevention, acute and chronic care and restoration and maintenance of health across the life span.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Hospitalist
Doctor of Osteopathic Medicine (D.O.)
Radiology - Neuroradiology
Doctor of Medicine (M.D.)
Hospitalist
Doctor of Medicine (M.D.)
Emergency Medicine
Doctor of Medicine (M.D.)
Pathology - Anatomic Pathology & Clinical Pathology
Doctor of Medicine (M.D.)
Colon & Rectal Surgery
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated July 08, 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 July 2025 to August 2026.
NPI Administrative Meta
Mailing Address
4531 Falcon Ave
Long Beach, CA 908071814
Phone: 5628427712