Active NPI 1841404530 Individual Practitioner Male Practitioner

Dr. Gary C Pien , MD, PhD

Allergy & Immunology • Berkeley Heights, NJ

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Gary Pien, MD, PhD is a certified Allergy & Immunology practicing in Berkeley Heights, NJ. With approximately 23 years of clinical experience since completing medical education in 2003, Dr. Pien delivers high-quality medical care to the local community at 1 DIAMOND HILL RD.

Dr. Pien is affiliated with Summit Medical Group Pa and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include professional service for preparation and provision of, professional service for multiple injections of allergen, test for allergy using allergenic extract. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1 Diamond Hill Rd

Berkeley Heights, NJ 079222104

Telephone 9082734300

Associated Practice Facility / Clinic

🏢 Summit Medical Group Pa Facility NPI 1942254347

Medicare Profile & Education

Medical School

Other

Graduation Year

2003

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Allergy & Immunology in Berkeley Heights, NJ

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

23 Yrs +3.5 yrs vs City Avg

City Avg: 19.5 Yrs

State Avg: 31.1 Yrs

Regional Practice Density

2 Specialists

Practicing in Berkeley Heights, NJ (141 Statewide)

Telehealth Adoption Rate

100.0% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

58.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Pien (23 Years) 23 Yrs

Berkeley Heights Specialty Average (19.5 Years) 19.5 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
95165 Professional service for preparation and provision of 1 or more antigens	292	26	$52.00	$16.05
95117 Professional service for multiple injections of allergen	170	30	$40.00	$13.73
95004 Test for allergy using allergenic extract	115	17	$16.00	$4.03
95018 Allergy testing with drugs or biologicals into or within the skin, immediate type reaction, including test interpretation and report	83	21	$102.00	$22.27
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	52	52	$274.00	$121.98
99213 Established patient office or other outpatient visit, typically 15 minutes	47	42	$188.00	$94.84
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	37	34	$274.00	$134.70
95076 Ingestion of test items for allergies, 120 minutes	33	28	$392.00	$136.19
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	29	29	$412.00	$175.91
36415 Insertion of needle into vein for collection of blood sample	14	14	$15.00	$8.65

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
95165 Professional service for preparation and provision of 1 or more antigens	874	28	$52.00	$17.45
86003 Measurement of antibody (ige) to allergic substance, crude allergen extract, each	252	19	$16.00	$4.97
95117 Professional service for multiple injections of allergen	172	27	$40.00	$13.80
95004 Test for allergy using allergenic extract	109	14	$16.00	$4.30
36415 Insertion of needle into vein for collection of blood sample	44	38	$15.00	$7.84
99213 Established patient office or other outpatient visit, typically 15 minutes	42	40	$188.00	$95.48
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	33	33	$412.00	$168.21
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	26	26	$274.00	$119.07
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	25	23	$274.00	$135.91
95012 Test to measure the level of nitric oxide gas	16	12	$73.00	$17.95
94010 Test to measure expiratory airflow and volume	15	11	$132.00	$24.65
95076 Ingestion of test items for allergies, 120 minutes	13	12	$392.00	$135.60

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
95165 Professional service for preparation and provision of 1 or more antigens	705	35	$52.00	$18.50
95117 Professional service for multiple injections of allergen	178	31	$40.00	$13.90
95115 Injection of incremental dosages of allergen	70	12	$35.00	$11.45
99213 Established patient office or other outpatient visit, typically 15 minutes	48	40	$188.00	$98.87
36415 Insertion of needle into vein for collection of blood sample	27	23	$15.00	$2.97
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	27	27	$274.00	$125.70
82784 Gammaglobulin (immune system protein) measurement	25	12	$38.00	$9.23
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	22	19	$274.00	$143.51
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	11	11	$412.00	$186.05
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	11	11	$32.00	$7.68

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
95165 Professional service for preparation and provision of 1 or more antigens	926	39	$35.97	$18.85
95117 Professional service for multiple injections of allergen	279	34	$40.00	$13.72
95004 Test for allergy using allergenic extract	128	14	$16.00	$4.88
95115 Injection of incremental dosages of allergen	63	12	$35.00	$11.21
99213 Established patient office or other outpatient visit, typically 15 minutes	54	45	$188.00	$97.48
82784 Gammaglobulin (immune system protein) measurement	46	18	$38.00	$9.30
36415 Insertion of needle into vein for collection of blood sample	43	34	$15.00	$3.00
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	37	37	$274.00	$126.76
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	29	22	$274.00	$146.08
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	25	25	$412.00	$188.21
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	21	20	$32.00	$7.77

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
95165 Professional service for preparation and provision of 1 or more antigens	1,032	44	$23.00	$17.13
95117 Professional service for multiple injections of allergen	258	33	$40.00	$12.76
95004 Test for allergy using allergenic extract	115	15	$16.00	$4.97
95115 Injection of incremental dosages of allergen	84	17	$35.00	$11.04
99213 Established patient office or other outpatient visit, typically 15 minutes	48	42	$188.00	$83.16
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	36	36	$274.00	$121.27
82784 Gammaglobulin (immune system protein) measurement	32	13	$38.00	$9.26
36415 Insertion of needle into vein for collection of blood sample	32	27	$15.00	$2.90
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	28	23	$274.00	$116.21
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	18	18	$412.00	$172.51
G0008 Administration of influenza virus vaccine	18	18	$50.00	$19.05
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	13	11	$32.00	$7.72

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
95165 Professional service for preparation and provision of 1 or more antigens	639	48	$23.00	$16.38
95117 Professional service for multiple injections of allergen	319	40	$40.00	$12.48
95004 Test for allergy using allergenic extract	176	20	$14.38	$4.90
95115 Injection of incremental dosages of allergen	128	20	$35.00	$10.81
99213 Established patient office or other outpatient visit, typically 15 minutes	57	47	$169.58	$80.01
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	51	42	$244.94	$110.97
95018 Allergy testing with drugs or biologicals into or within the skin, immediate type reaction, including test interpretation and report	46	13	$102.00	$24.77
82784 Gammaglobulin (immune system protein) measurement	40	13	$38.00	$10.13
36415 Insertion of needle into vein for collection of blood sample	37	33	$15.00	$2.94
94010 Test to measure expiratory airflow and volume	29	17	$132.00	$35.23
95012 Test to measure the level of nitric oxide gas	24	16	$73.00	$19.82
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	23	23	$365.65	$180.34
G0008 Administration of influenza virus vaccine	21	20	$50.00	$18.67
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	19	19	$247.95	$119.63
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	14	14	$32.00	$8.46
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	13	12	$30.00	$18.65

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
95165 Professional service for preparation and provision of 1 or more antigens	739	49	$23.00	$15.10
95117 Professional service for multiple injections of allergen	337	39	$40.00	$12.04
95115 Injection of incremental dosages of allergen	164	26	$35.00	$10.37
95004 Test for allergy using allergenic extract	145	17	$11.00	$6.14
99213 Established patient office or other outpatient visit, typically 15 minutes	77	61	$146.00	$76.81
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	42	42	$219.00	$117.06
36415 Insertion of needle into vein for collection of blood sample	26	24	$15.00	$2.83
94010 Test to measure expiratory airflow and volume	25	18	$132.00	$38.32
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	22	16	$89.00	$45.84
95012 Test to measure the level of nitric oxide gas	20	15	$73.00	$22.57
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	15	$217.00	$119.23
G0008 Administration of influenza virus vaccine	15	15	$50.00	$23.23
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	13	13	$30.00	$18.65
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	13	13	$32.00	$9.40

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
95165 Professional service for preparation and provision of 1 or more antigens	674	47	$23.00	$15.10
95117 Professional service for multiple injections of allergen	270	34	$40.00	$12.04
95115 Injection of incremental dosages of allergen	151	20	$35.00	$10.40
95004 Test for allergy using allergenic extract	150	18	$11.00	$7.52
99213 Established patient office or other outpatient visit, typically 15 minutes	87	64	$146.00	$77.99
36415 Insertion of needle into vein for collection of blood sample	49	38	$15.00	$2.94
82784 Gammaglobulin (immune system protein) measurement	39	12	$38.00	$12.50
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	35	35	$219.00	$117.22
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	33	30	$217.00	$118.61
94010 Test to measure expiratory airflow and volume	24	18	$132.00	$39.45
G0008 Administration of influenza virus vaccine	20	20	$51.90	$29.01
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	18	14	$89.00	$48.69
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	17	17	$29.65	$18.65
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	16	14	$32.00	$10.45
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$330.00	$180.24

Medical Specialties & State Licenses

CMS Verified: 2026-02-18

Allergy & Immunology Primary Specialty

NUCC Taxonomy Code: 207K00000X

State License NJ 25MA08470800

An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.

Pediatrics

NUCC Taxonomy Code: 208000000X

State License NJ 25MA08470800

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Hospital & Practice Group Affiliations

Summit Medical Group Pa

1 Diamond Hill Rd, Berkeley Heights, NJ 079222104

Phone: 9082734300

Practice Associates & Co-Workers

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

40 Associated Practitioners

Dr. Silpa Gadiraju , MD

Internal Medicine - Endocrinology, Diabetes & Metabolism

NPI 1003105750

Doctor of Medicine (M.D.)

Dr. John Dokko , DO

Internal Medicine - Nephrology

NPI 1003804550

Doctor of Osteopathic Medicine (D.O.)

Denise Rizzolo , PA

Physician Assistant

NPI 1003986191

Physician Assistant

Dr. Lawrence Nastro , MD

Internal Medicine - Infectious Disease

NPI 1013904861

Doctor of Medicine (M.D.)

Debra Ryan , PT

Physical Therapist

NPI 1013989045

Physical Therapist

Dr. Amir Salomon , MD

Radiology - Diagnostic Radiology

NPI 1033181011

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active September 21, 2012

NPI status registered as active in NPPES database

📍

Updated Practice Location September 21, 2012

Registered at 1 DIAMOND HILL RD, BERKELEY HEIGHTS, NJ 079222104 (Tel: 9082734300)

📍

Updated Business Mailing Address September 21, 2012

Registered at 1 DIAMOND HILL RD, BERKELEY HEIGHTS, NJ 079222104 (Tel: 9082734300)

👤

Provider Name / Credentials Updated September 21, 2012

Recorded as GARY PIEN, MD, PHD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 21, 2012

Allergy & Immunology (License #25MA08470800 in NJ)

🟢

Initial NPI Registration & Enumeration May 10, 2007

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: 1841404530

Entity Type:

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

Enumeration Date: May 10, 2007

Last Update: February 18, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

1 Diamond Hill Rd

Berkeley Heights, NJ 079222104

Phone: 9082734300

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.