Dr. Max D. Hammer, MD
- Medicare services, 2016
- 16
- Part D claims, 2023
- 14
- Industry payments
- $345
- Medical group
- 1
- State license
- 1
- Practice address
- 55 E Jackson Blvd, Chicago, IL 60604
- Practice phone
- Call (312) 663-1130
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Gateway Professional Services - Behavioral & Mental Health - Chicago (E Jackson Blvd)
Behavioral health facility · Chicago, Illinois
Find Dr. Hammer's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Max D. Hammer is a general surgeon in Chicago, Illinois
Dr. Hammer practices at Gateway Professional Services - Behavioral & Mental Health - Chicago (E Jackson Blvd) in Chicago, Illinois.
Dr. Hammer's NPI, 1477650794, was assigned on September 20, 2006. Dr. Hammer holds Illinois license 036-055631.
- NPI
- 1477650794NPI Registry (opens in a new tab)
- NPI enumeration date
- September 20, 2006
- NPI status
- Active
- Practice phone
- (312) 663-1130
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Max D. Hammer practices at Gateway Professional Services - Behavioral & Mental Health - Chicago (E Jackson Blvd) in Chicago, Illinois
Dr. Hammer's primary practice is Gateway Professional Services - Behavioral & Mental Health - Chicago (E Jackson Blvd), at 55 E Jackson Blvd, Chicago, IL 60604. The practice phone is (312) 663-1130.
- Gateway Professional Services - Behavioral & Mental Health - Chicago (E Jackson Blvd)55 E Jackson Blvd, Chicago, IL 60604Phone(312) 663-1130
Source: Doctors and Clinicians National Downloadable File (CMS)
Dr. Max D. Hammer is affiliated with 1 site of care and 1 medical group
Dr. Hammer's primary practice is Gateway Professional Services - Behavioral & Mental Health - Chicago (E Jackson Blvd) in Chicago, Illinois. The medical group on file is Gateway Professional Services, PC.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Max D. Hammer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hammer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Gateway Professional Services - Behavioral & Mental Health - Chicago (E Jackson Blvd) | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Max D. Hammer is one of 1,217 general surgeons in Illinois
Surgery is Dr. Hammer's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Hammer is licensed in Illinois.
Specialties and state licenses
- Surgery, IllinoisPrimary
General surgeons near Dr. Hammer
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Max D. Hammer billed Medicare for 16 services in 2016
CMS data shows 16 Medicare services from Dr. Hammer across 1 procedure code in 2016, all of them office visits. Medicare paid $327 for them. Every service was in an office.
Dr. Hammer compared with the Illinois median for general surgeons, 2016
- Dr. Hammer
- Illinois median
- Medicare services
- 16vs 19492% below
- Part D claims
- 14vs 2850% below
Medians across 1,031 general surgeons in Illinois with Dmand AI profiles that report each measure.
Dr. Hammer's most billed Medicare procedure codes, 2016
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hammer and other general surgeons in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Max D. Hammer's patients have a median age of 38
Across all payers, Dmand AI patient panel data puts Dr. Hammer's median patient age at 38, with 100% women.
Dr. Hammer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Max D. Hammer wrote 14 Medicare Part D claims in 2023
In 2023, Dr. Hammer wrote 14 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $24,156 in total drug cost. In 2022, CMS named 125 claims across 5 drugs.
Dr. Hammer's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 1252023: 1489%
Drugs named by CMS: 1 in 2023, 5 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Max D. Hammer received $345 in industry payments from 2016 to 2022
CMS Open Payments shows 12 general payments to Dr. Hammer from 5 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. W. L. Gore & Associates, Inc. paid the most, $194.
General payments to Dr. Hammer by program year, 2016 to 2022
Companies that paid Dr. Hammer the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Max D. Hammer's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Max D. Hammer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Max D. Hammer's NPI number?
Dr. Max D. Hammer's NPI number is 1477650794. It was assigned on September 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Max D. Hammer?
Dr. Max D. Hammer is a general surgeon in Chicago, Illinois. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Max D. Hammer practice?
Dr. Hammer practices at 55 E Jackson Blvd, Chicago, IL 60604. Dr. Hammer's primary practice is Gateway Professional Services - Behavioral & Mental Health - Chicago (E Jackson Blvd) in Chicago, Illinois.
What is Dr. Max D. Hammer's office phone number?
The practice phone on file for Dr. Hammer is (312) 663-1130.
What is Dr. Max D. Hammer's medical license number?
Dr. Hammer holds Illinois license 036-055631.
What medical group is Dr. Max D. Hammer part of?
Dr. Hammer is linked to Gateway Professional Services, PC.
Does Dr. Max D. Hammer accept Medicare?
Yes. CMS data shows Dr. Hammer billed Medicare for 16 services in 2016.
What services does Dr. Max D. Hammer bill to Medicare?
In 2016, Dr. Hammer's most billed Medicare services were office visit, established patient (99212).
What drugs does Dr. Max D. Hammer prescribe most?
In 2023 Medicare Part D data, Dr. Hammer's most prescribed drugs by claims were Vivitrol.
Has Dr. Max D. Hammer received payments from drug or device companies?
CMS Open Payments shows $345 in general payments to Dr. Hammer from 5 companies from 2016 to 2022. The largest total came from W. L. Gore & Associates, Inc.
How long has Dr. Max D. Hammer been practicing?
Dr. Hammer's NPI was assigned in 2006.
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