Physician Profile
Gregory K. Harter, MD
Unclaimed ProfileAbout Dr. Harter
Based in Waterloo, IA, Gregory K. Harter, MD is listed in the NPI registry under family medicine. Gregory graduated from University of Iowa, Rj & L Carver College of Medicine in 1986. Medicare claims data shows Gregory provided 4,014 services to 1,756 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, 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', and chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month.
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
- (319) 232-0555
- Email not available
Practice Locations
125 E TOWER PARK DR
Waterloo, IA 50701
2710 Saint Francis Dr Suite 210
Waterloo, IA 50702
220 W Ridgeway Ave Ste 106
Waterloo, IA 50701
Conditions Commonly Evaluated or Treated
Within Family Medicine 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
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
- High blood pressure
- High cholesterol
Digestive
- Acid reflux
- IBS
Genitourinary and reproductive
- Erectile dysfunction
- Heavy periods
Musculoskeletal and pain
- Gout
- Heel pain
Neurologic and behavioral
- ADHD
- Anxiety
- Depression
- Insomnia
- Migraines
Respiratory and infectious
- Acute bronchitis
- Asthma
- Sinus infection
Skin
- Acne
- Eczema
Common childhood and ear conditions
- Ear infection
- Pink eye
Pain & Joints
- Arthritis
- Back pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive interventions
- Birth control counseling
- Smoking cessation counseling
Screening and testing
- Cholesterol screening
- Depression screening
- Diabetes and prediabetes screening
- EKG
Diagnostic Tests
- COVID-19 testing
- Rapid Strep and Flu Swabs
- Urine Drug Screen
Exams & Screenings
- Camp and School Physical
- Pre-Op Clearance Exam
Foot and Leg Pain
- Toenail Fungus Treatment
Heart & Circulation
- Blood Pressure Check
Injections
- Immunotherapy
- Vitamin B12 Injections
Lungs & Breathing
- Pulmonary function test
Minor Procedures
- Burn and Wound Care
- Ingrown toenail removal
- Suture removal
Occupational Health
- DOT Physical
Office procedures
- Earwax removal
- Incision and drainage of an abscess
- Superficial foreign-body removal
Pain Management
- Joint injections
Preventive Care
- Chronic Illness Checkup
- Routine Vaccines
- Travel Vaccines And Consult
Respiratory
- Breathing Treatment
Senior Care
- Cognitive Assessment
Sexual & Reproductive Health
- STD Swabs and Screening
Skin Procedures
- Cyst Removal
- Precancerous Sun Spot Freezing
- Skin Tag Removal
- Wart Removal
Sleep Health
- At-Home Sleep Study Order
Urgent Care Procedures
- Stitches and Laceration Repair
Wellness & Weight
- Weight Management Consult
Women's Health
- Hormone Replacement Therapy Consultation
Procedures Most Often Billed to Medicare
4,014 services · 1,756 patients · 24 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
265 | More often than most peers in Family Medicine |
| Influenza vaccine, inactivated | Treatment | 90653 |
99 | More than most peers in Family Medicine |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
57 | As often as other peers in Family Medicine |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
54 | More than most peers in Family Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
37 | More often than most peers in Family Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
1,129 | More than most peers in Family Medicine |
| 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' | Billing code | G2211 |
574 | More than most peers in Family Medicine |
| Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99490 |
528 | More often than most peers in Family Medicine |
| Blood test, lipids (cholesterol and triglycerides) | Lab test | 80061 |
294 | More often than most peers in Family Medicine |
| Hemoglobin a1c level | Lab test | 83036 |
193 | More often than most peers in Family Medicine |
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 2
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 family doctors in Waterloo 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of Iowa, Rj & L Carver College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1986 at University of Iowa, Rj & L Carver College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in IA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Harter?
Dr. Harter is a family doctor in Waterloo, IA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Family Medicine”.
NPI registry
What is Dr. Harter's address?
Dr. Harter is listed at 125 E Tower Park Dr, Waterloo, IA 50701. 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. Harter?
The number on file is (319) 232-0555. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Harter?
Dr. Harter's National Provider Identifier is 1134157415. 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. Harter train?
Dr. Harter attended University of Iowa, Rj & L Carver College of Medicine, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Harter have?
Dr. Harter has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Harter perform?
According to Medicare billing data, Dr. Harter performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as influenza vaccine, inactivated and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Harter's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Harter. 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.