Active NPI 1629589890 Individual Practitioner Female Practitioner

Catherine N. Diamond , PA-C

Physician Assistant • New York, NY

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Catherine Diamond, PA-C is a certified Physician Assistant practicing in New York, NY. With approximately 9 years of clinical experience since completing medical education in 2017, Catherine Diamond delivers high-quality medical care to the local community at 489 5TH AVE FL 3.

Catherine Diamond is affiliated with Baptist Outpatient Services Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, automated urinalysis test. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

489 5th Ave Fl 3

New York, NY 100176145

Telephone 5613334000

Associated Practice Facility / Clinic

🏢 One Medical Of Ny, P.c. Facility NPI 1861709487

Medicare Profile & Education

Medical School

Other

Graduation Year

2017

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in New York, NY

Experienced Practitioner (5-10 Yrs)

Practitioner Clinical Experience

9 Yrs -0.2 yrs vs City Avg

City Avg: 9.2 Yrs

State Avg: 12.0 Yrs

Regional Practice Density

3119 Specialists

Practicing in New York, NY (15701 Statewide)

Telehealth Adoption Rate

6.4% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

88.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Diamond (9 Years) 9 Yrs

New York Specialty Average (9.2 Years) 9.2 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	151	148	$639.00	$74.74
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	100	100	$639.00	$94.16
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	98	93	$505.00	$46.91
99202 New patient office or other outpatient visit, typically 20 minutes	66	66	$505.00	$60.44
81003 Automated urinalysis test	37	37	$73.00	$2.18
87804 Detection test by immunoassay with direct visual observation for influenza virus	36	36	$225.00	$15.90
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	15	15	$167.00	$19.14
87430 Detection test by immunoassay technique for streptococcus, group a (strep)	15	15	$105.00	$16.47

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	106	105	$604.16	$78.26
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	59	58	$485.34	$48.98
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	56	56	$621.00	$98.33
81003 Automated urinalysis test	34	33	$66.94	$2.20
99202 New patient office or other outpatient visit, typically 20 minutes	27	27	$487.81	$61.68

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	285	220	$203.88	$80.00
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	170	170	$209.04	$100.13
87804 Detection test by immunoassay with direct visual observation for influenza virus	66	33	$38.06	$16.28
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus	40	39	$75.50	$41.27
81003 Automated urinalysis test	36	32	$6.50	$2.23
71046 X-ray of chest, 2 views	31	31	$66.61	$29.69
93000 Routine ekg using at least 12 leads including interpretation and report	30	30	$28.00	$12.77
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	19	19	$329.53	$148.78
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	17	17	$246.53	$112.43
82962 Blood glucose (sugar) test performed by hand-held instrument	15	15	$7.00	$3.23
90471 Administration of 1 vaccine	12	12	$41.92	$14.54
90714 Vaccine for tetanus and diphtheria toxoids injection into muscle, patient 7 years or older	12	12	$44.08	$28.05
87880 Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)	11	11	$33.00	$16.24

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	199	162	$151.90	$80.90
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	152	152	$221.18	$100.56
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	21	21	$317.62	$144.88
71046 X-ray of chest, 2 views	20	19	$65.55	$29.60
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus	18	18	$116.67	$45.23
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	18	$223.78	$115.14
90714 Vaccine for tetanus and diphtheria toxoids injection into muscle, patient 7 years or older	16	16	$59.09	$25.90
90471 Administration of 1 vaccine	16	16	$33.44	$14.80
81003 Automated urinalysis test	14	13	$13.57	$2.25
93000 Routine ekg using at least 12 leads including interpretation and report	13	13	$34.77	$13.27

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	51	51	$166.68	$103.20
99202 New patient office or other outpatient visit, typically 20 minutes	27	27	$111.18	$73.32
99213 Established patient office or other outpatient visit, typically 15 minutes	24	22	$112.94	$71.83
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	21	21	$56.01	$44.22
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus	15	15	$50.00	$45.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	43	43	$166.29	$101.81
99213 Established patient office or other outpatient visit, typically 15 minutes	23	23	$114.43	$70.06
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$281.58	$153.62

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	26	26	$171.00	$100.91
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	25	25	$279.49	$152.47
99213 Established patient office or other outpatient visit, typically 15 minutes	19	18	$112.26	$68.26
71046 X-ray of chest, 2 views	11	11	$70.52	$29.26

Medical Specialties & State Licenses

CMS Verified: 2026-05-20

Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License NY 035120

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Hospital & Practice Group Affiliations

Baptist Outpatient Services Inc

10520 Forest Hill Blvd, Wellington, FL 334143179

Phone: 5612049355

Baptist Outpatient Services Inc

6264 W Sample Rd, Coral Springs, FL 330673273

Baptist Outpatient Services Inc

8950 N Kendall Dr, Miami, FL 331762144

Phone: 7865967200

Baptist Outpatient Services Inc

20665 Lyons Rd, Boca Raton, FL 334343911

Phone: 5618836677

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

8 Associated Practitioners

Julia Barlow-Vorster , APRN

Nurse Practitioner - Family

NPI 1124072533

Advanced Practice Registered Nurse

Carlos Coloma , APRN

Nurse Practitioner - Family

NPI 1124442314

Advanced Practice Registered Nurse

Dr. Robert Nisenbaum , DO

Emergency Medicine

NPI 1144216664

Doctor of Osteopathic Medicine (D.O.)

Allison Ly , PA-C

Physician Assistant

NPI 1255388815

Physician Assistant (Certified)

Jeanine Darquea , PA-C

Physician Assistant

NPI 1285623918

Physician Assistant (Certified)

Jamie Taylor , APRN

Nurse Practitioner - Psychiatric/Mental Health

NPI 1598185472

Advanced Practice Registered Nurse

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

11 Historical Events

📍

Updated Practice Location May 20, 2026

Registered at 489 5TH AVE FL 3, NEW YORK, NY 100176145 (Tel: 5613334000)

📍

Updated Business Mailing Address May 20, 2026

Registered at 1 EMBARCADERO CTR STE 1900, SAN FRANCISCO, CA 941113723

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 20, 2026

Physician Assistant (License #035120 in NY)

📍

Updated Practice Location June 20, 2021

Registered at 3319 S STATE ROAD 7 STE 102, WELLINGTON, FL 334498099 (Tel: 5613334000)

👤

Provider Name / Credentials Updated June 20, 2021

Recorded as CATHERINE DIAMOND, PA-C

✅

NPI Profile Active October 16, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location October 16, 2017

Registered at 19 S WASHINGTON AVE, BERGENFIELD, NJ 076212324 (Tel: 2013870177)

📍

Updated Business Mailing Address October 16, 2017

Registered at 6403 CITY PL, EDGEWATER, NJ 070203176

👤

Provider Name / Credentials Updated October 16, 2017

Recorded as CATHERINE NGUYEN, PA-C

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 16, 2017

Physician Assistant (License #25MP00449900 in NJ)

🟢

Initial NPI Registration & Enumeration October 16, 2017

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1629589890

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: October 16, 2017

Last Update: May 20, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

1 Embarcadero Ctr Ste 1900

San Francisco, CA 941113723

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.