Active NPI 1215958715 Individual Practitioner Male Practitioner

John Gray

Surgery • Danville, PA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

John Gray is a certified Surgery practicing in Danville, PA. With approximately 41 years of clinical experience since graduating from Duke University School Of Medicine in 1985, John Gray delivers high-quality medical care to the local community at GEISINGER MEDICAL CTR.

John Gray maintains professional affiliations with Dlp Conemaugh Physician Practices Llc, Alamance Regional Medical Center Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include ultrasound study of arm or leg veins with compression and maneuvers, ultrasound of both sides of head and neck blood flow, follow-up hospital inpatient care per day. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

Geisinger Medical Ctr
100 N. Academy Ave M.c. 2150

Danville, PA 178220001

Telephone 5702716369

Medicare Profile & Education

Medical School

Duke University School Of Medicine

Graduation Year

1985

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Danville, PA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

41 Yrs +20.8 yrs vs City Avg

City Avg: 20.2 Yrs

State Avg: 26.1 Yrs

Regional Practice Density

51 Specialists

Practicing in Danville, PA (1976 Statewide)

Telehealth Adoption Rate

13.7% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

82.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Gray (41 Years) 41 Yrs

Danville Specialty Average (20.2 Years) 20.2 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
93970 Ultrasound study of arm or leg veins with compression and maneuvers	48	48	$355.00	$30.92
93880 Ultrasound of both sides of head and neck blood flow	48	48	$365.00	$35.82
99231 Follow-up hospital inpatient care per day, typically 15 minutes	31	16	$78.00	$46.92
99213 Established patient office or other outpatient visit, typically 15 minutes	27	22	$142.00	$62.42
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	23	23	$273.83	$123.14
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	22	22	$231.00	$19.78
76937 Ultrasonic guidance for blood vessel access	21	15	$61.00	$13.14
93923 Complete ultrasound study of arm and leg arteries	20	20	$265.00	$20.41
93926 Ultrasound of one leg arteries or artery grafts	13	12	$293.00	$21.72
93979 Ultrasound scan of blood flow of aorta, vena cava, bypass graphs, or one side of the groin or limited scan	13	13	$231.00	$22.36

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93880 Ultrasound of both sides of head and neck blood flow	93	91	$365.00	$36.96
93970 Ultrasound study of arm or leg veins with compression and maneuvers	57	56	$355.00	$32.07
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	44	43	$231.00	$20.59
93923 Complete ultrasound study of arm and leg arteries	42	41	$265.00	$20.72
76937 Ultrasonic guidance for blood vessel access	38	21	$61.00	$13.70
99231 Follow-up hospital inpatient care per day, typically 15 minutes	38	21	$78.00	$47.89
99213 Established patient office or other outpatient visit, typically 15 minutes	32	25	$142.00	$63.51
93926 Ultrasound of one leg arteries or artery grafts	31	25	$293.00	$21.93
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	28	27	$271.00	$125.39
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	26	15	$143.00	$76.24
93979 Ultrasound scan of blood flow of aorta, vena cava, bypass graphs, or one side of the groin or limited scan	20	18	$231.00	$22.31
93990 Ultrasound of dialysis access	15	12	$221.00	$22.54
93880 Ultrasound of both sides of head and neck blood flow	12	12	$365.00	$37.05
75625 Radiological supervision and interpretation X-ray of abdominal aorta	12	11	$267.00	$64.65

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93970 Ultrasound study of arm or leg veins with compression and maneuvers	148	137	$355.00	$32.95
93880 Ultrasound of both sides of head and neck blood flow	138	135	$365.00	$38.19
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	74	71	$231.00	$21.16
93923 Complete ultrasound study of arm and leg arteries	67	63	$265.00	$21.38
99231 Follow-up hospital inpatient care per day, typically 15 minutes	49	28	$78.00	$37.61
76937 Ultrasonic guidance for blood vessel access	41	29	$61.00	$13.47
93926 Ultrasound of one leg arteries or artery grafts	31	24	$293.00	$22.81
99213 Established patient office or other outpatient visit, typically 15 minutes	25	23	$142.00	$65.19
99221 Initial hospital inpatient care per day, typically 30 minutes	21	19	$201.00	$97.38
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	16	16	$271.00	$124.41
93979 Ultrasound scan of blood flow of aorta, vena cava, bypass graphs, or one side of the groin or limited scan	15	15	$231.00	$23.09
75625 Radiological supervision and interpretation X-ray of abdominal aorta	14	13	$267.00	$67.02
93990 Ultrasound of dialysis access	13	13	$221.00	$23.41
37215 Insertion of stent and blood clot protection device in neck artery with review by radiologist	12	12	$2057.00	$967.12

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93880 Ultrasound of both sides of head and neck blood flow	112	107	$365.00	$38.29
93970 Ultrasound study of arm or leg veins with compression and maneuvers	108	106	$355.00	$33.18
99231 Follow-up hospital inpatient care per day, typically 15 minutes	66	38	$83.67	$37.57
93923 Complete ultrasound study of arm and leg arteries	52	50	$265.00	$21.51
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	49	46	$231.00	$21.53
76937 Ultrasonic guidance for blood vessel access	45	32	$59.13	$14.23
93926 Ultrasound of one leg arteries or artery grafts	22	18	$293.00	$23.26
93979 Ultrasound scan of blood flow of aorta, vena cava, bypass graphs, or one side of the groin or limited scan	19	18	$231.00	$23.58
75625 Radiological supervision and interpretation X-ray of abdominal aorta	18	18	$233.94	$67.93
75710 Radiological supervision and interpretation of imaging of artery of one arm or leg	16	15	$290.38	$83.28
99221 Initial hospital inpatient care per day, typically 30 minutes	16	15	$202.63	$98.75
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	16	16	$284.13	$132.96
93880 Ultrasound of both sides of head and neck blood flow	12	12	$365.00	$38.29
37228 Balloon dilation of artery of leg, initial vessel	12	11	$8669.00	$512.57
99213 Established patient office or other outpatient visit, typically 15 minutes	12	12	$157.58	$89.42
37215 Insertion of stent and blood clot protection device in neck artery with review by radiologist	11	11	$2057.00	$982.72

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93880 Ultrasound of both sides of head and neck blood flow	111	107	$365.00	$39.95
93970 Ultrasound study of arm or leg veins with compression and maneuvers	73	70	$355.00	$34.28
99231 Follow-up hospital inpatient care per day, typically 15 minutes	69	42	$86.38	$39.21
93923 Complete ultrasound study of arm and leg arteries	50	48	$265.00	$22.26
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	45	44	$231.00	$21.82
76937 Ultrasonic guidance for blood vessel access	43	31	$61.00	$14.47
99221 Initial hospital inpatient care per day, typically 30 minutes	21	21	$214.62	$98.16
37215 Insertion of stent and blood clot protection device in neck artery with review by radiologist	20	20	$2057.00	$1021.07
93979 Ultrasound scan of blood flow of aorta, vena cava, bypass graphs, or one side of the groin or limited scan	16	16	$231.00	$24.84
93990 Ultrasound of dialysis access	15	12	$221.00	$25.09
99213 Established patient office or other outpatient visit, typically 15 minutes	13	11	$142.00	$50.98
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	13	13	$284.46	$137.66

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93880 Ultrasound of both sides of head and neck blood flow	123	119	$365.00	$40.24
93970 Ultrasound study of arm or leg veins with compression and maneuvers	99	93	$355.00	$34.59
99231 Follow-up hospital inpatient care per day, typically 15 minutes	66	36	$78.00	$39.06
93923 Complete ultrasound study of arm and leg arteries	61	58	$265.00	$22.29
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	42	42	$231.00	$22.59
76937 Ultrasonic guidance for blood vessel access	42	36	$61.00	$14.90
99221 Initial hospital inpatient care per day, typically 30 minutes	28	26	$201.00	$99.50
93970 Ultrasound study of arm or leg veins with compression and maneuvers	16	16	$355.00	$32.79
75625 Radiological supervision and interpretation X-ray of abdominal aorta	15	14	$267.00	$55.93
37215 Insertion of stent and blood clot protection device in neck artery with review by radiologist	14	14	$2057.00	$1032.10
93926 Ultrasound of one leg arteries or artery grafts	14	13	$293.00	$24.40
75710 Radiological supervision and interpretation of imaging of artery of one arm or leg	14	11	$315.00	$86.69
93979 Ultrasound scan of blood flow of aorta, vena cava, bypass graphs, or one side of the groin or limited scan	13	13	$231.00	$24.79

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93880 Ultrasound of both sides of head and neck blood flow	149	145	$365.00	$39.68
93970 Ultrasound study of arm or leg veins with compression and maneuvers	135	125	$355.00	$34.29
93923 Complete ultrasound study of arm and leg arteries	85	78	$265.00	$21.82
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	73	71	$231.00	$22.40
99231 Follow-up hospital inpatient care per day, typically 15 minutes	38	28	$78.00	$38.75
99221 Initial hospital inpatient care per day, typically 30 minutes	24	23	$201.00	$100.16
93926 Ultrasound of one leg arteries or artery grafts	24	19	$293.00	$24.19
76937 Ultrasonic guidance for blood vessel access	23	17	$61.00	$15.04
93979 Ultrasound scan of blood flow of aorta, vena cava, bypass graphs, or one side of the groin or limited scan	15	15	$231.00	$24.96

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93880 Ultrasound of both sides of head and neck blood flow	57	57	$365.00	$39.07
99231 Follow-up hospital inpatient care per day, typically 15 minutes	56	27	$78.00	$38.53
93970 Ultrasound study of arm or leg veins with compression and maneuvers	42	41	$355.00	$34.17
93923 Complete ultrasound study of arm and leg arteries	24	23	$265.00	$22.29
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	19	17	$231.00	$21.90
99221 Initial hospital inpatient care per day, typically 30 minutes	12	12	$201.00	$99.62
93979 Ultrasound scan of blood flow of aorta, vena cava, bypass graphs, or one side of the groin or limited scan	11	11	$231.00	$24.77

Medical Specialties & State Licenses

CMS Verified: 2026-06-30

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License NC 9501257

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Surgery - Vascular Surgery

NUCC Taxonomy Code: 2086S0129X

State License PA MD434078

A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.

Surgery - Vascular Surgery

NUCC Taxonomy Code: 2086S0129X

State License ID 8971137

A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.

Hospital & Practice Group Affiliations

Dlp Conemaugh Physician Practices Llc

105 Nason Dr, Roaring Spring, PA 166731202

Phone: 8142242141

Dlp Conemaugh Physician Practices Llc

1086 Franklin St M, Johnstown, PA 159054305

Phone: 8145349194

Dlp Conemaugh Physician Practices Llc

1086 Franklin St E, Johnstown, PA 159054305

Phone: 8145349104

Dlp Conemaugh Physician Practices Llc

1111 Franklin St, Johnstown, PA 159054341

Dlp Conemaugh Physician Practices Llc

1086 Franklin St, Johnstown, PA 159054305

Alamance Regional Medical Center Inc

1240 Huffman Mill Rd, Burlington, NC 272158700

Phone: 3365387000

Secondary Practice Locations

1075 N Curtis Rd Ste 101

Boise, ID 837061348

Phone: 2083022800

115 Heart Dr

Greenville, NC 278348982

Phone: 2527444400

Practice Associates & Co-Workers

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

21 Associated Practitioners

Scott Oldfield , CRNP

Nurse Practitioner

NPI 1073576914

Certified Registered Nurse Practitioner

Dr. Joseph Allen , MD

Student in an Organized Health Care Education/Training Program

NPI 1164282919

Doctor of Medicine (M.D.)

Thad Neidrick , CRNP

Nurse Practitioner

NPI 1225324171

Certified Registered Nurse Practitioner

Dr. John Irvan , MD

Surgery - Vascular Surgery

NPI 1245551233

Doctor of Medicine (M.D.)

Dr. Isaiah Chandra , MD

Student in an Organized Health Care Education/Training Program

NPI 1275384646

Doctor of Medicine (M.D.)

Dr. Neal Cooper , MD

Surgery - Vascular Surgery

NPI 1285011767

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

11 Historical Events

📍

Updated Business Mailing Address June 30, 2026

Registered at 100 N ACADEMY AVE # MC2770, DANVILLE, PA 178220001

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 30, 2026

Surgery (License #9501257 in NC)

📍

Updated Practice Location May 24, 2021

Registered at GEISINGER MEDICAL CTR, 100 N. ACADEMY AVE M.C. 2150, DANVILLE, PA 178220001 (Tel: 5702716369)

📍

Updated Business Mailing Address May 24, 2021

Registered at GEISINGER MEDICAL CTR, 100 N. ACADEMY AVE M.C. 2770, DANVILLE, PA 178220001

👤

Provider Name / Credentials Updated May 24, 2021

Recorded as JOHN GRAY

✅

NPI Profile Active November 12, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location November 12, 2016

Registered at GEISINGER MEDICAL CTR, 100 N. ACADEMY AVE M.C. 21-50, DANVILLE, PA 178220001 (Tel: 5702716369)

📍

Updated Business Mailing Address November 12, 2016

Registered at GEISINGER MEDICAL CTR, 100 N. ACADEMY AVE M.C. 27-70, DANVILLE, PA 178220001 (Tel: 5702716369)

👤

Provider Name / Credentials Updated November 12, 2016

Recorded as JOHN GRAY, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) November 12, 2016

Surgery (License #MD434078 in PA)

🟢

Initial NPI Registration & Enumeration July 21, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1215958715

Entity Type:

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

Enumeration Date: July 21, 2006

Last Update: June 30, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

100 N Academy Ave # Mc2770

Danville, PA 178220001

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.