Active NPI 1801826151 Individual Practitioner Male Practitioner

Dr. John B Mack , MD

Surgery • Longview, TX

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. John Mack, MD is a certified Surgery practicing in Longview, TX. With approximately 39 years of clinical experience since graduating from Baylor College Of Medicine in 1987, Dr. Mack delivers high-quality medical care to the local community at 707 HOLLYBROOK DR.

Dr. Mack is affiliated with Associated Clinicians Of East Texas and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066). Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

707 Hollybrook Dr

Longview, TX 756052410

Telephone 9037534666

Fax 9037536634

Associated Practice Facility / Clinic

🏢 Diagnostic Clinic Of Longview Pa Facility NPI 1386638468

Medicare Profile & Education

Medical School

Baylor College Of Medicine

Graduation Year

1987

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Longview, TX

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

39 Yrs +17.2 yrs vs City Avg

City Avg: 21.8 Yrs

State Avg: 25.2 Yrs

Regional Practice Density

10 Specialists

Practicing in Longview, TX (2342 Statewide)

Telehealth Adoption Rate

10.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

63.9% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Mack (39 Years) 39 Yrs

Longview Specialty Average (21.8 Years) 21.8 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	212	159	$149.26	$87.77
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	163	163	$314.81	$163.97
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	52	47	$223.08	$126.09
G0279 Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)	44	38	$30.00	$18.46
19301 Partial removal of breast	41	38	$1627.00	$643.36
77066 Diagnostic mammography of both breasts	41	36	$324.00	$106.99
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	23	23	$615.52	$241.62
38900 Lymph node imaging during surgery	22	22	$325.00	$134.87
76642 Limited ultrasound scan of 1 breast	21	16	$169.86	$55.47
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	21	21	$2625.00	$677.87
77065 Diagnostic mammography of 1 breast	17	17	$253.00	$83.12
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	16	16	$89.38	$55.46
49505 Repair of groin hernia (5 years or older)	13	13	$1120.00	$444.71

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	189	189	$310.00	$158.16
99213 Established patient office or other outpatient visit, typically 15 minutes	181	142	$135.00	$84.85
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	51	49	$200.00	$123.37
19301 Partial removal of breast	44	38	$1645.49	$623.16
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	35	35	$2625.00	$668.83
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	31	31	$614.73	$227.27
38900 Lymph node imaging during surgery	31	31	$325.00	$127.32
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	30	17	$65.00	$60.29
G0279 Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)	29	27	$30.00	$23.01
49505 Repair of groin hernia (5 years or older)	22	22	$1191.41	$500.63
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	22	22	$220.00	$122.85
77066 Diagnostic mammography of both breasts	19	19	$324.00	$106.62
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	14	13	$80.00	$52.65
77065 Diagnostic mammography of 1 breast	13	12	$253.00	$83.72
19303 Total removal of breast	12	12	$3437.50	$1135.73
49593 Initial repair of sliding hernia of abdomen, 3-10 cm in length	11	11	$1795.00	$447.30
19083 Biopsy of breast and placement of locating device using ultrasound, first growth	11	11	$1698.86	$154.50

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	178	178	$310.34	$161.82
99213 Established patient office or other outpatient visit, typically 15 minutes	167	132	$135.00	$86.43
G0279 Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)	34	29	$30.00	$23.18
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	33	32	$200.00	$125.94
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	29	29	$2625.00	$668.37
77066 Diagnostic mammography of both breasts	23	22	$324.00	$110.40
49505 Repair of groin hernia (5 years or older)	20	20	$1164.90	$504.82
38900 Lymph node imaging during surgery	18	18	$325.00	$131.34
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	17	17	$608.56	$262.22
19301 Partial removal of breast	16	16	$1677.84	$623.00
77065 Diagnostic mammography of 1 breast	15	15	$253.00	$86.54
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	14	13	$220.00	$131.12
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	12	12	$80.00	$55.22
49585 Repair of hernia at navel (5 years or older)	11	11	$906.82	$292.59
49568 Placement of mesh to repair incisional or abdominal hernia	11	11	$790.00	$254.12

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	196	144	$135.00	$88.36
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	143	143	$310.00	$164.10
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus	71	65	$65.99	$45.23
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	37	35	$200.00	$127.81
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	35	35	$2625.00	$698.54
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	26	24	$80.00	$55.36
G0279 Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)	23	19	$53.48	$24.58
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	23	23	$220.00	$132.79
19301 Partial removal of breast	17	14	$1722.71	$667.87
49505 Repair of groin hernia (5 years or older)	14	14	$1289.79	$527.10
77066 Diagnostic mammography of both breasts	14	14	$347.43	$112.65
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	12	12	$907.50	$213.93
38900 Lymph node imaging during surgery	11	11	$325.00	$132.71
19083 Biopsy of breast and placement of locating device using ultrasound, first growth	11	11	$1625.00	$153.70

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	174	136	$135.00	$72.49
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	144	144	$310.42	$160.09
87426 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus	61	53	$100.00	$45.23
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	35	32	$200.00	$104.42
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	23	23	$2625.00	$698.02
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	19	18	$80.00	$44.45
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	19	19	$220.00	$136.66
G0279 Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)	15	15	$75.00	$24.13
49560 Repair of incisional or abdominal hernia	15	14	$1650.00	$687.22
38900 Lymph node imaging during surgery	14	14	$325.00	$137.42
49505 Repair of groin hernia (5 years or older)	14	14	$1581.07	$585.50
49568 Placement of mesh to repair incisional or abdominal hernia	13	12	$790.00	$266.32
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	13	13	$1089.00	$224.73

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	207	156	$135.00	$71.63
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	172	172	$310.35	$158.58
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	42	42	$2625.00	$697.98
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	30	30	$200.00	$103.24
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	29	29	$220.00	$131.12
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	15	15	$80.00	$43.56
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	12	12	$1089.00	$232.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	177	132	$135.00	$69.63
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	158	158	$310.19	$159.05
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	43	40	$206.51	$99.11
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	31	30	$220.00	$133.26
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	29	29	$2625.00	$669.47
49505 Repair of groin hernia (5 years or older)	21	21	$1220.48	$507.64
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	21	21	$80.00	$42.16
38792 Injection of radioactive material for x-ray identification of lymph node	15	15	$425.00	$20.66
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	15	15	$1089.00	$247.79
19301 Partial removal of breast	14	13	$1743.21	$630.45

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	175	129	$135.00	$69.62
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	145	145	$310.41	$154.85
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	34	31	$80.00	$41.47
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	34	34	$220.00	$132.61
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	33	33	$2625.00	$670.80
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	25	24	$200.00	$102.79
38525 Biopsy or removal of lymph nodes of under the arm, open procedure	13	13	$1089.00	$258.09
19301 Partial removal of breast	13	11	$1627.00	$522.36
49505 Repair of groin hernia (5 years or older)	12	12	$1262.08	$483.70
38792 Injection of radioactive material for x-ray identification of lymph node	12	12	$425.00	$25.83
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	11	11	$3400.00	$309.22

Medical Specialties & State Licenses

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License TX H6396

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

099133305 (TX)

Hospital & Practice Group Affiliations

Associated Clinicians Of East Texas

707 Hollybrook Dr, Longview, TX 756052410

Phone: 9037576042

Practice Associates & Co-Workers

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

1 Associated Practitioners

Dr. Ryan Pevey , MD

Surgery

NPI 1720297765

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

7 Historical Events

📍

Updated Business Mailing Address June 13, 2019

Registered at PO BOX 610393, DALLAS, TX 752610393 (Tel: 9032328501)

✅

NPI Profile Active October 10, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location October 10, 2016

Registered at 707 HOLLYBROOK DR, LONGVIEW, TX 756052410 (Tel: 9037534666)

📍

Updated Business Mailing Address October 10, 2016

Registered at PO BOX 847176, DALLAS, TX 752847176 (Tel: 9032371810)

👤

Provider Name / Credentials Updated October 10, 2016

Recorded as JOHN MACK, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 10, 2016

Surgery (License #H6396 in TX)

🟢

Initial NPI Registration & Enumeration July 03, 2006

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: 1801826151

Entity Type:

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

Enumeration Date: July 03, 2006

Last Update: June 13, 2019

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 610393

Dallas, TX 752610393

Phone: 9032328501

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.