Physician Profile
Joseph D. Mack, M.D.
Unclaimed ProfileAbout Dr. Mack
Joseph D. Mack, M.D. is a healthcare provider in Portland, ME specializing in colon & rectal surgery. Joseph trained at Tufts University School of Medicine, graduating in 2016. Joseph is also listed as specializing in student in an organized health care education program. Medicare claims data shows Joseph provided 81 services to 76 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, new patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more, and diagnostic exam of anus using an endoscope.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (207) 662-0111
- Email not available
Practice Locations
22 BRAMHALL ST
Portland, ME 04102
Procedures Most Often Billed to Medicare
81 services · 76 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
18 | Less often than most peers in Colon & Rectal Surgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
20 | Less often than most peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
18 | As often as other peers in Colon & Rectal Surgery |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
14 | Less often than most peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
11 | Less often than most peers in Colon & Rectal Surgery |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 6
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other colorectal surgeons in Portland 4
Same specialty, same city.
More connections — 21 related providers in 3 groups
Trained at Tufts University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2016 at Tufts University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of anus using an endoscope 5
Providers in ME who bill this service to Medicare most often.
Common questions
What is Joseph D. Mack's specialty?
Joseph D. Mack is a colorectal surgeon in Portland, ME. That is the designation recorded for this NPI in the federal registry, where it is listed as “Colon & Rectal Surgery”.
NPI registry
Where can I find Joseph D. Mack?
Joseph D. Mack is listed at 22 Bramhall St, Portland, ME 04102. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Joseph D. Mack?
The number on file is (207) 662-0111. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Joseph D. Mack?
Joseph D. Mack's National Provider Identifier is 1114380615. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Joseph D. Mack's education?
Joseph D. Mack attended Tufts University School of Medicine, graduating in 2016. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Joseph D. Mack have?
Joseph D. Mack has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
What is Joseph D. Mack known for?
According to Medicare billing data, Joseph D. Mack performs procedures including diagnostic exam of anus using an endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Joseph D. Mack's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Joseph D. Mack. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.