Physician Profile
Gregory K. Hartig, MD
Unclaimed ProfileAbout Dr. Hartig
Based in Madison, WI, Gregory K. Hartig, MD is listed in the NPI registry under otolaryngology (ent). Gregory graduated from University of Michigan Medical School in 1988. According to Medicare claims data, Gregory cared for 566 Medicare patients across 640 services. The services billed most often include established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
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
- (608) 263-6190
- Email not available
Practice Locations
600 HIGHLAND AVENUE
Madison, WI 53792
Conditions Commonly Evaluated or Treated
Within Otolaryngology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Balance
Ear and hearing
- Cholesteatoma
- Eustachian tube dysfunction
- Hearing loss
- Otosclerosis
- Perforated eardrum
- Swimmer's ear
Head, neck, and salivary
Nose and sinus
- Broken nose
- Deviated septum
- Loss or reduction of smell
- Nasal obstruction
- Nasal polyps
- Nosebleeds
- Seasonal allergies
Sleep and airway
Throat and voice
- Enlarged adenoids
- Globus sensation
- Hoarseness and voice change
- Laryngopharyngeal reflux
- Swallowing difficulties
- Vocal cord nodules
- Vocal cord paralysis
Cancer
Head & Neck
Throat & Voice
Procedures & services
Most searched procedures
Office diagnosis
Cosmetic
Ear & Hearing
Ear procedures
Head & Neck
Head and neck surgery
- Neck lymph-node dissection
- Parathyroid surgery
- Parotid gland surgery
- Thyroid removal surgery
- Voice-box removal
Nose & Sinus
Nose and sinus procedures
Sleep and airway
Throat & Voice
Throat, voice, and swallowing
Procedures Most Often Billed to Medicare
640 services · 566 patients · 12 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of voice box using a flexible endoscope | Procedure | 31575 |
70 | More often than most peers in Otolaryngology (ENT) |
| Biopsy of mouth | Procedure | 40808 |
23 | Too few peers to compare |
| Removal of lymph nodes, muscle, and tissue of neck | Procedure | 38724 |
21 | More often than most peers in Otolaryngology (ENT) |
| Fine needle aspiration biopsy using ultrasound guidance, first growth | Procedure | 10005 |
19 | As often as other peers in Otolaryngology (ENT) |
| Biopsy or removal of deep lymph nodes of neck | Procedure | 38510 |
16 | Too few peers to compare |
| Biopsy of front 2/3 of tongue | Procedure | 41100 |
15 | Too few peers to compare |
| Removal of growth of front 2/3 of tongue with switches | Procedure | 41112 |
13 | Too few peers to compare |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
202 | More than most peers in Otolaryngology (ENT) |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
113 | As often as other peers in Otolaryngology (ENT) |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
71 | As often as other peers in Otolaryngology (ENT) |
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 1
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 otolaryngology specialists in Madison 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of Michigan Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1988 at University of Michigan Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of voice box using a flexible endoscope 8
Providers in WI who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Hartig?
Dr. Hartig is an otolaryngology (ent) in Madison, WI. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Dr. Hartig's address?
Dr. Hartig is listed at 600 Highland Avenue, Madison, WI 53792. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Hartig?
The number on file is (608) 263-6190. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Hartig's NPI number?
Dr. Hartig's National Provider Identifier is 1386608966. 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
Where did Dr. Hartig train?
Dr. Hartig attended University of Michigan Medical School, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Hartig been practicing?
Dr. Hartig has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Hartig perform?
According to Medicare billing data, Dr. Hartig performs procedures including diagnostic exam of voice box using a flexible endoscope, biopsy of mouth and removal of lymph nodes, muscle, and tissue of neck, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Hartig confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hartig. 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.