Active NPI 1225589021 Individual Practitioner Male Practitioner

Grayson Steedman Halladay , PA-C

Physician Assistant - Surgical • Phoenix, AZ

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Grayson Halladay, PA-C is a certified Physician Assistant - Surgical practicing in Phoenix, AZ. With approximately 10 years of clinical experience since completing medical education in 2016, Grayson Halladay delivers high-quality medical care to the local community at 9321 W THOMAS RD STE 205.

Grayson Halladay is affiliated with Center For Orthopedic Research And Education Llc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, x-ray of lower and sacral spine, 2-3 views, new patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

9321 W Thomas Rd Ste 205

Phoenix, AZ 850373392

Telephone 8669742673

Fax 8669392673

Associated Practice Facility / Clinic

🏢 Center For Orthopedic Research And Education, Llc Facility NPI 1528526290

Medicare Profile & Education

Medical School

Other

Graduation Year

2016

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant - Surgical in Phoenix, AZ

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

10 Yrs -1.3 yrs vs City Avg

City Avg: 11.3 Yrs

State Avg: 15.2 Yrs

Regional Practice Density

125 Specialists

Practicing in Phoenix, AZ (431 Statewide)

Telehealth Adoption Rate

5.6% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

69.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Halladay (10 Years) 10 Yrs

Phoenix Specialty Average (11.3 Years) 11.3 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	116	87	$224.58	$74.82
72100 X-ray of lower and sacral spine, 2-3 views	111	102	$97.00	$32.18
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	89	74	$318.98	$101.67
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	48	48	$413.23	$135.65
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	43	39	$46.89	$13.59
22853 Insertion of cage or mesh device to spine bone and disc space during spine fusion	32	22	$86.82	$30.47
72040 X-ray of upper spine, 2-3 views	20	19	$96.18	$29.68
22612 Fusion of spine in lower back	17	17	$534.88	$190.15
22558 Fusion of spine bones with removal of disc at lower spinal column, anterior approach	15	15	$515.99	$91.81
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$276.05	$91.78
72070 X-ray of middle spine, 2 views	12	11	$79.50	$26.98

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
72100 X-ray of lower and sacral spine, 2-3 views	153	142	$96.55	$32.93
99213 Established patient office or other outpatient visit, typically 15 minutes	145	113	$224.58	$73.83
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	115	98	$318.98	$103.86
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	51	51	$413.23	$137.51
72040 X-ray of upper spine, 2-3 views	38	35	$96.18	$32.05
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	32	32	$276.05	$93.70
22853 Insertion of cage or mesh device to spine bone and disc space during spine fusion	21	13	$86.82	$32.61

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	100	84	$224.58	$74.70
72100 X-ray of lower and sacral spine, 2-3 views	95	94	$97.00	$33.35
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	82	65	$318.98	$103.08
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	31	31	$413.23	$139.45
22853 Insertion of cage or mesh device to spine bone and disc space during spine fusion	26	17	$86.82	$34.33
72040 X-ray of upper spine, 2-3 views	22	22	$96.18	$31.56
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	19	19	$276.05	$93.37
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	19	19	$137.80	$46.86
22612 Fusion of spine in lower back	12	12	$534.88	$212.10

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	65	53	$290.58	$108.25
99213 Established patient office or other outpatient visit, typically 15 minutes	65	56	$195.34	$77.08
72100 X-ray of lower and sacral spine, 2-3 views	64	60	$93.26	$33.32
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	20	20	$412.88	$136.22
72040 X-ray of upper spine, 2-3 views	15	15	$93.90	$32.99
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$270.30	$94.64

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	104	80	$267.70	$92.28
72100 X-ray of lower and sacral spine, 2-3 views	59	56	$89.44	$30.67
99213 Established patient office or other outpatient visit, typically 15 minutes	51	46	$181.38	$62.96
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	45	45	$268.38	$91.14
22853 Insertion of cage or mesh device to spine bone and disc space during spine fusion	32	16	$90.49	$35.80
72040 X-ray of upper spine, 2-3 views	19	19	$91.30	$32.00
99221 Initial hospital inpatient care per day, typically 30 minutes	11	11	$253.68	$86.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	108	91	$267.70	$90.16
72100 X-ray of lower and sacral spine, 2-3 views	83	82	$91.30	$29.53
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	64	64	$268.38	$89.72
99213 Established patient office or other outpatient visit, typically 15 minutes	58	55	$181.38	$60.87
22614 Fusion of additional segment of spine	33	14	$135.49	$53.56
22853 Insertion of cage or mesh device to spine bone and disc space during spine fusion	21	18	$90.49	$34.01
72040 X-ray of upper spine, 2-3 views	21	20	$91.30	$29.99
22842 Placement of stabilizing device to back, 3-6 spine bone segments	13	13	$264.49	$104.68
72070 X-ray of middle spine, 2 views	12	12	$85.18	$28.48

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	134	108	$267.70	$88.51
72100 X-ray of lower and sacral spine, 2-3 views	104	99	$91.30	$28.61
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	87	87	$268.38	$89.20
99213 Established patient office or other outpatient visit, typically 15 minutes	67	62	$181.38	$60.34
72040 X-ray of upper spine, 2-3 views	29	29	$91.30	$27.63
72070 X-ray of middle spine, 2 views	12	12	$85.18	$28.22

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	117	92	$267.70	$88.93
72100 X-ray of lower and sacral spine, 2-3 views	67	62	$90.48	$29.02
22614 Fusion of additional segment of spine	40	19	$135.49	$53.54
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	37	37	$268.38	$90.39
22853 Insertion of cage or mesh device to spine bone and disc space during spine fusion	27	15	$90.49	$35.62
99213 Established patient office or other outpatient visit, typically 15 minutes	23	22	$181.38	$60.20
72040 X-ray of upper spine, 2-3 views	21	19	$91.30	$27.54
22842 Placement of stabilizing device to back, 3-6 spine bone segments	18	18	$264.49	$104.36
22612 Fusion of spine in lower back	12	11	$550.28	$216.07

Medical Specialties & State Licenses

CMS Verified: 2025-08-13

Physician Assistant - Surgical Primary Specialty

NUCC Taxonomy Code: 363AS0400X

State License AZ 6575

Definition to come...

Physician Assistant

NUCC Taxonomy Code: 363A00000X

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

212451 (AZ)

Hospital & Practice Group Affiliations

Center For Orthopedic Research And Education Llc

10494 W Thunderbird Blvd, Sun City, AZ 853516122

Phone: 8669742673

Secondary Practice Locations

18444 N 25th Ave Ste 210

Phoenix, AZ 850231264

Phone: 8669742673

Practice Associates & Co-Workers

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

40 Associated Practitioners

Courtney Page , PA-C

Physician Assistant

NPI 1003439373

Physician Assistant (Certified)

Dr. Michelle Rumpel , DPT

Physical Therapist

NPI 1003455114

Doctor of Physical Therapy

Dr. Stephen Redding , MD

Orthopaedic Surgery

NPI 1003610742

Doctor of Medicine (M.D.)

Dr. Thomas Zdeblick , MD

Orthopaedic Surgery

NPI 1003870668

Doctor of Medicine (M.D.)

Dr. Jefferey Michaelson , MD

Orthopaedic Surgery

NPI 1003886342

Doctor of Medicine (M.D.)

Dr. Matthew Weichbrodt , DO

Orthopaedic Surgery - Hand Surgery

NPI 1013123058

Doctor of Osteopathic Medicine (D.O.)

Career & Practice History Timeline

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

15 Historical Events

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 13, 2025

Physician Assistant

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 25, 2025

Physician Assistant (License #6575 in AZ)

📍

Updated Practice Location February 20, 2024

Registered at 9321 W THOMAS RD STE 205, PHOENIX, AZ 850373392 (Tel: 8669742673)

📍

Updated Business Mailing Address February 20, 2024

Registered at 18444 N 25TH AVE STE 310, PHOENIX, AZ 850231266 (Tel: 8669742673)

✅

NPI Profile Active September 05, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location September 05, 2017

Registered at 18444 N 25TH AVE, SUITE 310, PHOENIX, AZ 85023 (Tel: 8669742673)

📍

Updated Business Mailing Address September 05, 2017

Registered at 9305 W THOMAS RD, SUITE 305, PHOENIX, AZ 850373328 (Tel: 8669742673)

👤

Provider Name / Credentials Updated September 05, 2017

Recorded as GRAYSON HALLADAY, PA-C

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 05, 2017

Physician Assistant

✅

NPI Profile Active October 18, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location October 18, 2016

Registered at 18444 N 25TH AVE, SUITE 310, PHOENIX, AZ 85023 (Tel: 8669742673)

📍

Updated Business Mailing Address October 18, 2016

Registered at 9305 W THOMAS RD, SUITE 305, PHOENIX, AZ 850373328 (Tel: 8669742673)

👤

Provider Name / Credentials Updated October 18, 2016

Recorded as GRAYSON HALLADAY, PA-C

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 18, 2016

Physician Assistant

🟢

Initial NPI Registration & Enumeration October 18, 2016

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: 1225589021

Entity Type:

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

Enumeration Date: October 18, 2016

Last Update: August 13, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

18444 N 25th Ave Ste 310

Phoenix, AZ 850231266

Phone: 8669742673

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.