Are you Freddie J. Mertzig, APNP? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 3237 S 16Th St, Milwaukee, WI 53215
About Freddie Mertzig
Listed in the NPI registry as a nurse practitioner — gerontology, Freddie J. Mertzig, APNP practices in Milwaukee, WI. Freddie is also listed as specializing in nurse practitioner. According to Medicare claims data, Freddie cared for 780 Medicare patients across 1,647 services. The services billed most often include injection, methylprednisolone acetate, 1 mg, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and insertion of needle into vein for collection of blood sample. NPI 1922523836 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (262) 647-5000
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
3237 S 16TH ST
Milwaukee, WI 53215
Conditions and Services Within This Provider's Scope
Within Nurse Practitioner - Gerontology 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
Brain & Memory
Brain & Nerves
Digestive & Gut
General Health
General Senior Health
- Unexplained Weight Loss
- Anemia of chronic disease
- Managing multiple medications
- Severe dehydration
- Short stature and growth concerns
Infections
Mental Health
Skin
Skin & Wounds
Back & Spine
Bladder & Urinary
Breathing & Lungs
Digestive Health
Endocrine & Hormones
Endocrine & Metabolic
Heart & Circulation
- AFib
- Congestive heart failure
- High blood pressure
- High cholesterol
- Poor Circulation and Swollen Legs
Joints & Bones
Kidney & Urinary
Lung & Respiratory
Mobility & Balance
Nerves & Sensation
Pain
Sensory
Sleep
Procedures & services
Bladder & Urinary
Care Planning
- Advance Care Planning
- Caregiver Support and Counseling
- Comfort care transition
- Hospice Care Evaluation
Diagnostic Tests
General Health
General Senior Health
Home & Facility Care
Mental Health
Minor Procedures
Mobility & Safety
- Senior Driving Safety Evaluation
- Walker and Wheelchair Prescription
- Fall risk assessment
- Home Safety Evaluation
Preventive Care
- Chronic disease management
- Medicare annual wellness visit
- Bone Density Scan Referral
- Diabetic Foot Care
Referrals & Care Coordination
- At-Home Sleep Study Order
- Hearing Test Referral
- Home Health Care Referral
- Occupational Therapy Referral
- Speech and Swallowing Therapy Referral
Referrals & Coordination
Specialized Care
Vaccines & Injections
Wound Care
Brain & Memory
Heart & Circulation
In-Office Treatments
Lab & Monitoring
Lab Tests & Screening
Medication Management
Pain Management
Vaccines & Prevention
Procedures Most Often Billed to Medicare
1,647 services · 780 patients · 13 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
131 | More often than most peers in Nurse Practitioner — Gerontology |
| Removal of impacted ear wax | Procedure | 69210 |
26 | As often as other peers in Nurse Practitioner — Gerontology |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
20 | Less often than most peers in Nurse Practitioner — Gerontology |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
600 | Less often than most peers in Nurse Practitioner — Gerontology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
413 | More than most peers in Nurse Practitioner — Gerontology |
| Blood test, clotting time | Lab test | 85610 |
112 | Too few peers to compare |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
96 | As often as other peers in Nurse Practitioner — Gerontology |
| Blood test, basic group of blood chemicals (calcium, total) | Lab test | 80048 |
83 | More often than most peers in Nurse Practitioner — Gerontology |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
82 | As often as other peers in Nurse Practitioner — Gerontology |
| Blood test, comprehensive group of blood chemicals | Lab test | 80053 |
29 | Less often than most peers in Nurse Practitioner — Gerontology |
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 5
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 nurse practitioners in Milwaukee 8
Same specialty, same city.
More connections — 18 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2017 at Other 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 2
Providers in WI who bill this service to Medicare most often.
Common questions
What kind of doctor is Freddie J. Mertzig?
Freddie J. Mertzig is a nurse practitioner in Milwaukee, WI. That is the designation recorded for this NPI in the federal registry, where it is listed as “Nurse Practitioner — Gerontology”.
NPI registry
What is Freddie J. Mertzig's address?
Freddie J. Mertzig is listed at 3237 S 16Th St, Milwaukee, WI 53215. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Freddie J. Mertzig?
The number on file is (262) 647-5000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Freddie J. Mertzig's NPI number?
Freddie J. Mertzig's National Provider Identifier is 1922523836. 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 Freddie J. Mertzig train?
Freddie J. Mertzig attended Other, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How long has Freddie J. Mertzig been practicing?
Freddie J. Mertzig has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What procedures does Freddie J. Mertzig perform?
According to Medicare billing data, Freddie J. Mertzig performs procedures including insertion of needle into vein for collection of blood sample and removal of impacted ear wax; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Freddie J. Mertzig confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Freddie J. Mertzig. If this is you, claiming it is free.
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