Active NPI 1609917418 Individual Practitioner Male Practitioner

Dr. Gregory A Robertson , MD

Surgery • Chandler, AZ

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Gregory Robertson, MD is a certified Surgery practicing in Chandler, AZ. With approximately 41 years of clinical experience since graduating from Harvard Medical School in 1985, Dr. Robertson delivers high-quality medical care to the local community at 1100 S DOBSON RD STE 204.

Dr. Robertson is affiliated with Sjhmc Physician Services and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, initial hospital care with straightforward or low-level medical decision making, if using time, at least, initial hospital care with moderate level of medical decision making, if using time, at least. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1100 S Dobson Rd Ste 204

Chandler, AZ 852866160

Telephone 6027263606

Fax 6232085075

Associated Practice Facility / Clinic

🏢 Agave Matrix Llc Facility NPI 1578074209

Medicare Profile & Education

Medical School

Harvard Medical School

Graduation Year

1985

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Chandler, AZ

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

41 Yrs +14.0 yrs vs City Avg

City Avg: 27.0 Yrs

State Avg: 23.6 Yrs

Regional Practice Density

14 Specialists

Practicing in Chandler, AZ (801 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

67.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Robertson (41 Years) 41 Yrs

Chandler Specialty Average (27.0 Years) 27.0 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
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	71	44	$200.00	$75.03
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	66	66	$381.00	$125.95
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	50	49	$560.00	$164.69
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	37	37	$2091.26	$670.58
99231 Follow-up hospital inpatient care per day, typically 15 minutes	35	23	$109.00	$47.64

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	68	37	$109.00	$48.85
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	60	59	$382.47	$126.69
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	44	30	$200.00	$76.69
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	25	25	$560.00	$170.82
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	19	19	$2003.91	$672.60
99221 Initial hospital inpatient care per day, typically 30 minutes	15	15	$282.00	$81.65
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	15	15	$454.00	$163.60
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	14	12	$300.00	$125.56
99213 Established patient office or other outpatient visit, typically 15 minutes	13	11	$207.00	$88.70

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	70	39	$170.97	$70.08
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	61	59	$323.89	$133.17
99231 Follow-up hospital inpatient care per day, typically 15 minutes	51	31	$90.18	$38.21
99221 Initial hospital inpatient care per day, typically 30 minutes	38	37	$279.92	$98.38
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	17	17	$1945.79	$699.01
99284 Emergency department visit with moderate level of medical decision making	15	15	$236.00	$122.26

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	74	39	$79.00	$38.09
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	67	39	$138.79	$71.07
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	53	52	$275.00	$134.75
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	34	31	$303.53	$196.72
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	11	$203.00	$128.91
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	15	14	$254.00	$179.64
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	15	15	$1526.40	$683.76

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99231 Follow-up hospital inpatient care per day, typically 15 minutes	65	30	$80.11	$39.11
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	65	35	$131.40	$71.97
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	38	37	$289.63	$200.69
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	28	28	$275.00	$136.96
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	21	14	$238.57	$144.34
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	19	16	$196.05	$107.06
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	18	18	$1757.33	$725.52
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	15	15	$315.20	$206.19

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	71	42	$122.66	$71.54
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	70	70	$291.14	$198.89
99231 Follow-up hospital inpatient care per day, typically 15 minutes	32	20	$80.72	$38.71
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	25	25	$318.24	$202.42
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	21	20	$275.00	$134.58
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	16	13	$205.63	$142.76
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	11	11	$2319.55	$680.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	58	38	$166.88	$67.40
99231 Follow-up hospital inpatient care per day, typically 15 minutes	46	23	$110.00	$36.17
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	41	39	$451.56	$187.63
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	31	31	$300.00	$191.74
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	17	17	$384.00	$126.08
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	15	14	$143.00	$99.70
99221 Initial hospital inpatient care per day, typically 30 minutes	13	13	$285.00	$93.33
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	13	13	$2326.69	$640.84

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	87	43	$176.13	$65.84
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	58	55	$502.41	$184.45
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	28	28	$223.00	$151.30
99213 Established patient office or other outpatient visit, typically 15 minutes	17	13	$98.00	$67.51
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	14	14	$143.00	$99.19
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	13	13	$2117.23	$658.62
49650 Repair of groin hernia using an endoscope	11	11	$2031.18	$463.36

Medical Specialties & State Licenses

CMS Verified: 2024-12-06

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License AZ 17506

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

296170-004 (AZ)

Hospital & Practice Group Affiliations

Sjhmc Physician Services

3555 S Val Vista Dr, Gilbert, AZ 852977323

Phone: 4807288000

Sjhmc Physician Services

500 W Thomas Rd, Phoenix, AZ 850134235

Phone: 6024066017

Practice Associates & Co-Workers

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

4 Associated Practitioners

Dr. Albert Amini , MD

Surgery

NPI 1386890556

Doctor of Medicine (M.D.)

Dr. Sanket Jani , MD

Pediatrics - Neonatal-Perinatal Medicine

NPI 1518255215

Doctor of Medicine (M.D.)

Amanda Davis , PA

Physician Assistant - Surgical

NPI 1700028602

Physician Assistant

Dr. Shawn Stevenson , DO

Surgery

NPI 1891766127

Doctor of Osteopathic Medicine (D.O.)

Career & Practice History Timeline

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

8 Historical Events

📍

Updated Practice Location June 07, 2022

Registered at 1100 S DOBSON RD STE 204, CHANDLER, AZ 852866160 (Tel: 6027263606)

📍

Updated Business Mailing Address June 07, 2022

Registered at PO BOX 33269, PHOENIX, AZ 850673269 (Tel: 6024064786)

✅

NPI Profile Active March 08, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location March 08, 2016

Registered at 5240 E KNIGHT DR, SUITE 118, TUCSON, AZ 857122122 (Tel: 5203191455)

📍

Updated Business Mailing Address March 08, 2016

Registered at 5240 E KNIGHT DR, SUITE 118, TUCSON, AZ 857122122 (Tel: 5203191455)

👤

Provider Name / Credentials Updated March 08, 2016

Recorded as GREGORY ROBERTSON, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 08, 2016

Surgery (License #17506 in AZ)

🟢

Initial NPI Registration & Enumeration February 12, 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: 1609917418

Entity Type:

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

Enumeration Date: February 12, 2007

Last Update: December 06, 2024

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 33269

Phoenix, AZ 850673269

Phone: 6024064786

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.