Active NPI 1689745002 Individual Practitioner Male Practitioner

Dr. Daniel Paul Mass , MD

Orthopaedic Surgery - Hand Surgery • Chicago, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Daniel Mass, MD is a certified Orthopaedic Surgery - Hand Surgery practicing in Chicago, IL. With approximately 51 years of clinical experience since graduating from University Of Chicago, Pritzker School Of Medicine in 1975, Dr. Mass delivers high-quality medical care to the local community at 5841 S MARYLAND AVE.

Dr. Mass is affiliated with The Board Of Trustees Of The University Of Illinois and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, aspiration and/or injection of fluid from large joint. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

5841 S Maryland Ave
Mc 3079

Chicago, IL 606371447

Telephone 7737026306

Fax 7737024378

Associated Practice Facility / Clinic

🏢 University Of Chicago Facility NPI 1821048786

Medicare Profile & Education

Medical School

University Of Chicago, Pritzker School Of Medicine

Graduation Year

1975

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Orthopaedic Surgery - Hand Surgery in Chicago, IL

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

51 Yrs +29.5 yrs vs City Avg

City Avg: 21.5 Yrs

State Avg: 23.4 Yrs

Regional Practice Density

32 Specialists

Practicing in Chicago, IL (135 Statewide)

Telehealth Adoption Rate

15.6% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

73.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Mass (51 Years) 51 Yrs

Chicago Specialty Average (21.5 Years) 21.5 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2023)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	14	11	$362.00	$94.94

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	13	13	$736.00	$178.88
99213 Established patient office or other outpatient visit, typically 15 minutes	12	11	$362.00	$96.58

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	14	12	$438.86	$140.43

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	186	112	$162.48	$27.59
99213 Established patient office or other outpatient visit, typically 15 minutes	57	55	$212.04	$54.84
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	49	49	$343.43	$83.05
20610 Aspiration and/or injection of fluid from large joint	23	18	$514.87	$50.16
20550 Injection into tendon or ligament	18	13	$455.00	$36.81
64721 Release and/or relocation of hand nerve	17	16	$2833.24	$349.60
99202 New patient office or other outpatient visit, typically 20 minutes	14	14	$265.71	$54.85

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	226	145	$155.97	$27.23
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	61	61	$330.11	$83.08
99213 Established patient office or other outpatient visit, typically 15 minutes	54	52	$225.89	$54.49
99202 New patient office or other outpatient visit, typically 20 minutes	26	26	$255.00	$54.12
20610 Aspiration and/or injection of fluid from large joint	26	21	$489.04	$49.85
20550 Injection into tendon or ligament	22	18	$450.48	$39.62
64721 Release and/or relocation of hand nerve	19	18	$2713.42	$388.40
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	18	$289.50	$83.28
20526 Injection of carpal tunnel	13	12	$499.62	$70.10
23472 Prosthetic repair of shoulder joint, total shoulder	12	12	$9377.17	$1651.56

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	246	151	$149.95	$27.29
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	83	83	$314.81	$83.29
99213 Established patient office or other outpatient visit, typically 15 minutes	66	59	$210.17	$54.27
20550 Injection into tendon or ligament	26	21	$423.31	$40.99
20610 Aspiration and/or injection of fluid from large joint	26	23	$479.87	$50.94
99202 New patient office or other outpatient visit, typically 20 minutes	22	22	$243.00	$54.29
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	21	21	$277.14	$83.26
64721 Release and/or relocation of hand nerve	20	19	$2740.85	$440.63
23472 Prosthetic repair of shoulder joint, total shoulder	16	16	$9751.64	$1573.36
20600 Aspiration and/or injection of fluid from small joint	15	12	$360.53	$36.59
20526 Injection of carpal tunnel	13	13	$504.69	$73.24

Medical Specialties & State Licenses

CMS Verified: 2025-03-06

Orthopaedic Surgery - Hand Surgery Primary Specialty

NUCC Taxonomy Code: 207XS0106X

State License IL 036-053003

An orthopaedic surgeon trained in the investigation, preservation and restoration by medical, surgical and rehabilitative means of all structures of the upper extremity directly affecting the form and function of the hand and wrist.

Orthopaedic Surgery

NUCC Taxonomy Code: 207X00000X

State License IL 036053003

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

336-017787 (IL)

Hospital & Practice Group Affiliations

The Board Of Trustees Of The University Of Illinois

901 S Walcott St, Chicago, IL 606123725

Phone: 3129967161

The Board Of Trustees Of The University Of Illinois

1801 W Taylor St, Chicago, IL 606124795

The Board Of Trustees Of The University Of Illinois

1740 W Taylor St, Chicago, IL 606127232

Secondary Practice Locations

1801 W Taylor St

Chicago, IL 606124795

Phone: 8666002273

Practice Associates & Co-Workers

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

40 Associated Practitioners

Dr. Don Martinez , MD

Radiology - Diagnostic Radiology

NPI 1003059288

Doctor of Medicine (M.D.)

Alexandra Dumitrescu

Internal Medicine

NPI 1003078049

Peleg Horowitz

Neurological Surgery

NPI 1003088279

Sandeep Gurbuxani

Pathology - Hematology

NPI 1003093535

Dr. Niren Gandra , MD

Internal Medicine

NPI 1003126020

Doctor of Medicine (M.D.)

Dr. Allie Dakroub , MD MS

Internal Medicine

NPI 1003174202

MDMS

Career & Practice History Timeline

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

7 Historical Events

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 06, 2025

Orthopaedic Surgery (License #036053003 in IL)

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 5841 S MARYLAND AVE, MC 3079, CHICAGO, IL 606371447 (Tel: 7737026306)

📍

Updated Business Mailing Address July 08, 2007

Registered at 5841 S MARYLAND AVE, MC 3079, CHICAGO, IL 606371447 (Tel: 7737026306)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as DANIEL MASS, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Orthopaedic Surgery

🟢

Initial NPI Registration & Enumeration November 10, 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: 1689745002

Entity Type:

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

Enumeration Date: November 10, 2006

Last Update: March 06, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

5841 S Maryland Ave, Mc 3079

Chicago, IL 606371447

Phone: 7737026306

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.