Active NPI 1518288323 Individual Practitioner Male Practitioner

Dr. Peter Nissen Chalmers , MD

Orthopaedic Surgery • Saint Louis, MO

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Peter Chalmers, MD is a certified Orthopaedic Surgery practicing in Saint Louis, MO. With approximately 16 years of clinical experience since graduating from University Of Missouri, Columbia School Of Medicine in 2010, Dr. Chalmers delivers high-quality medical care to the local community at 4921 PARKVIEW PL.

Dr. Chalmers is affiliated with University Of Utah Adult Services 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, new patient outpatient office visit, 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. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

4921 Parkview Pl
Ste 6a/6b/12a

Saint Louis, MO 631101032

Telephone 3145143500

Fax 3147472598

Associated Practice Facility / Clinic

🏢 The Retina Institute Llc Facility NPI 1407858673

Medicare Profile & Education

Medical School

University Of Missouri, Columbia School Of Medicine

Graduation Year

2010

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Orthopaedic Surgery in Saint Louis, MO

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

16 Yrs -4.1 yrs vs City Avg

City Avg: 20.1 Yrs

State Avg: 25.7 Yrs

Regional Practice Density

172 Specialists

Practicing in Saint Louis, MO (550 Statewide)

Telehealth Adoption Rate

3.5% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

75.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Chalmers (16 Years) 16 Yrs

Saint Louis Specialty Average (20.1 Years) 20.1 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	75	59	$251.15	$92.89
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	57	43	$248.74	$95.11
99213 Established patient office or other outpatient visit, typically 15 minutes	41	32	$172.11	$63.87
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	39	39	$380.44	$129.45
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	36	31	$53.90	$16.06
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	31	31	$380.71	$124.12
99213 Established patient office or other outpatient visit, typically 15 minutes	31	27	$172.93	$69.02
23472 Prosthetic repair of shoulder joint, total shoulder	25	25	$4763.43	$1375.27
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	24	19	$53.90	$16.06
20610 Aspiration and/or injection of fluid from large joint	19	14	$181.32	$45.31
29823 Removal of extensive shoulder joint tissue using an endoscope	13	13	$2203.00	$213.13
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	11	11	$113.00	$34.07
23430 Anchoring of biceps tendon	11	11	$2148.00	$443.50

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	71	59	$234.66	$94.17
99213 Established patient office or other outpatient visit, typically 15 minutes	58	49	$161.14	$64.13
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	56	47	$236.18	$93.85
99213 Established patient office or other outpatient visit, typically 15 minutes	41	32	$161.55	$63.41
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	39	39	$354.32	$129.95
23472 Prosthetic repair of shoulder joint, total shoulder	27	27	$4527.41	$1370.89
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	20	20	$354.07	$129.99
20610 Aspiration and/or injection of fluid from large joint	17	14	$192.51	$46.45
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	12	11	$113.00	$34.66
29827 Repair of shoulder rotator cuff using an endoscope	12	12	$3000.00	$1041.02
29826 Shaving of part of shoulder bone and repair of ligament using an endoscope	12	12	$2360.75	$167.06
29823 Removal of extensive shoulder joint tissue using an endoscope	11	11	$2203.00	$120.79
23430 Anchoring of biceps tendon	11	11	$2148.00	$346.48

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	97	78	$220.69	$96.18
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	62	52	$221.01	$96.13
99213 Established patient office or other outpatient visit, typically 15 minutes	61	48	$153.87	$65.33
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	41	41	$339.92	$132.13
99213 Established patient office or other outpatient visit, typically 15 minutes	40	35	$154.18	$64.59
23472 Prosthetic repair of shoulder joint, total shoulder	31	30	$4471.88	$1395.18
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	26	26	$339.55	$131.95
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$223.76	$78.99
29823 Removal of extensive shoulder joint tissue using an endoscope	13	13	$2203.00	$182.08
23430 Anchoring of biceps tendon	12	12	$2148.00	$392.66
29823 Removal of extensive shoulder joint tissue using an endoscope	11	11	$2203.00	$120.89
29826 Shaving of part of shoulder bone and repair of ligament using an endoscope	11	11	$2360.75	$168.10

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	107	84	$217.00	$97.46
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	62	50	$217.00	$96.98
99213 Established patient office or other outpatient visit, typically 15 minutes	46	42	$150.38	$65.00
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	43	43	$334.55	$133.68
99213 Established patient office or other outpatient visit, typically 15 minutes	43	37	$150.38	$64.90
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	36	36	$334.55	$132.07
23472 Prosthetic repair of shoulder joint, total shoulder	30	29	$4471.88	$1388.00
29826 Shaving of part of shoulder bone and repair of ligament using an endoscope	17	17	$2360.75	$171.20
23430 Anchoring of biceps tendon	16	16	$2148.00	$411.38
29823 Removal of extensive shoulder joint tissue using an endoscope	15	14	$2203.00	$204.85
29827 Repair of shoulder rotator cuff using an endoscope	14	14	$3000.00	$1051.11

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	52	45	$217.00	$79.32
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	37	33	$217.00	$79.18
99213 Established patient office or other outpatient visit, typically 15 minutes	25	24	$150.38	$51.67
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	25	23	$292.60	$111.91
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	22	21	$292.60	$111.73
23472 Prosthetic repair of shoulder joint, total shoulder	21	21	$4432.97	$1441.89
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	16	16	$334.55	$130.55
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	15	15	$334.55	$129.78
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$223.76	$76.19
29826 Shaving of part of shoulder bone and repair of ligament using an endoscope	14	14	$2360.75	$170.61
23430 Anchoring of biceps tendon	14	14	$2148.00	$430.99
29827 Repair of shoulder rotator cuff using an endoscope	13	12	$3000.00	$1086.76
99213 Established patient office or other outpatient visit, typically 15 minutes	12	12	$150.38	$51.58

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	69	54	$217.00	$78.24
99213 Established patient office or other outpatient visit, typically 15 minutes	58	43	$148.42	$51.20
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	43	37	$217.00	$77.15
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	35	35	$221.58	$76.19
20610 Aspiration and/or injection of fluid from large joint	28	23	$190.71	$49.68
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	25	25	$292.60	$108.23
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	22	22	$220.78	$76.67
23472 Prosthetic repair of shoulder joint, total shoulder	20	20	$4342.18	$1442.38
99213 Established patient office or other outpatient visit, typically 15 minutes	19	16	$148.26	$51.20
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	11	11	$334.55	$129.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	64	51	$143.72	$50.76
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	59	46	$214.47	$75.97
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	39	30	$213.51	$77.59
99213 Established patient office or other outpatient visit, typically 15 minutes	29	25	$143.41	$50.77
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	27	27	$214.29	$76.33
20610 Aspiration and/or injection of fluid from large joint	26	21	$198.75	$50.41
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	25	25	$214.45	$76.19
29826 Shaving of part of shoulder bone and repair of ligament using an endoscope	13	13	$2360.75	$179.79
29823 Removal of extensive shoulder joint tissue using an endoscope	13	13	$2203.00	$194.65
23430 Anchoring of biceps tendon	12	12	$2148.00	$403.66
23472 Prosthetic repair of shoulder joint, total shoulder	12	12	$4389.88	$1472.46
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	12	12	$289.47	$104.35
20610 Aspiration and/or injection of fluid from large joint	11	11	$172.25	$46.68

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	72	52	$210.52	$77.39
99213 Established patient office or other outpatient visit, typically 15 minutes	52	40	$141.39	$50.26
99213 Established patient office or other outpatient visit, typically 15 minutes	41	31	$141.39	$48.98
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	37	28	$210.52	$77.41
20610 Aspiration and/or injection of fluid from large joint	34	27	$182.38	$46.63
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	25	25	$324.31	$128.27
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	17	17	$212.28	$76.07
23472 Prosthetic repair of shoulder joint, total shoulder	17	16	$4335.68	$1466.26
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	17	17	$285.09	$106.10
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	16	16	$324.31	$128.34
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	14	14	$212.28	$76.02
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	14	14	$285.09	$109.81
20610 Aspiration and/or injection of fluid from large joint	13	13	$172.25	$46.56

Medical Specialties & State Licenses

CMS Verified: 2021-11-11

Orthopaedic Surgery Primary Specialty

NUCC Taxonomy Code: 207X00000X

State License MO 2015005950

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

Hospital & Practice Group Affiliations

University Of Utah Adult Services

1950 Circle Of Hope Dr, Salt Lake City, UT 841125500

Phone: 8015812121

University Of Utah Adult Services

50 N Medical Dr, Salt Lake City, UT 841320100

Phone: 8012132995

University Of Utah Adult Services

590 S Wakara Way, Salt Lake City, UT 841081200

Phone: 8015877109

University Of Utah Adult Services

50 N Medical Dr, Salt Lake City, UT 841320001

Phone: 8015812121

Practice Associates & Co-Workers

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

40 Associated Practitioners

Emily Hearst , PA

Physician Assistant

NPI 1013621861

Physician Assistant

Christi Abeln , PNP

Nurse Practitioner - Pediatrics

NPI 1023034253

Pediatric Nurse Practitioner

Dr. Brian Kelly , MD

Orthopaedic Surgery - Pediatric Orthopaedic Surgery

NPI 1023244522

Doctor of Medicine (M.D.)

Dr. Nicholas Pallotta , MD

Orthopaedic Surgery - Orthopaedic Surgery of the Spine

NPI 1023351129

Doctor of Medicine (M.D.)

Michael Raethka , PA

Physician Assistant

NPI 1033109392

Physician Assistant

Stephen Broaddus , PA

Physician Assistant

NPI 1033452107

Physician Assistant

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active October 22, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location October 22, 2015

Registered at 4921 PARKVIEW PL, STE 6A/6B/12A, SAINT LOUIS, MO 631101032 (Tel: 3145143500)

📍

Updated Business Mailing Address October 22, 2015

Registered at 660 S EUCLID AVE, C B 8233, SAINT LOUIS, MO 631101010 (Tel: 3145143500)

👤

Provider Name / Credentials Updated October 22, 2015

Recorded as PETER CHALMERS, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 22, 2015

Orthopaedic Surgery (License #2015005950 in MO)

🟢

Initial NPI Registration & Enumeration June 15, 2010

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: 1518288323

Entity Type:

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

Enumeration Date: June 15, 2010

Last Update: November 11, 2021

Sole Proprietor: No

Update or Correct Profile

Mailing Address

660 S Euclid Ave, C B 8233

Saint Louis, MO 631101010

Phone: 3145143500

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.