DR. MARY L GERALTS MD
NPI 1386759397
Internal Medicine in Hartland, WI

NPI Status: Active since August 20, 2006

Contact Information

600 WALNUT RIDGE DR
HARTLAND, WI
ZIP 53029
Phone: (262) 369-6902
Fax: (262) 369-7041

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  • Individual
  • Female
  • Years of Experience 40
  • Internal Medicine
  • Accepts Insurance
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About MARY GERALTS

This page provides the complete NPI Profile along with additional information for Mary Geralts, an internist established in Hartland, Wisconsin with a medical specialization in Internal Medicine and more than 40 years of experience. She graduated from Medical College Of Wisconsin in 1986. The healthcare provider is registered in the NPI registry with number 1386759397 assigned on August 2006. The practitioner's primary taxonomy code is 207R00000X with license number 34411 (WI). The provider is registered as an individual and her NPI record was last updated 2 years ago.

NPI
1386759397
Provider Name
DR. MARY L GERALTS MD
Other Name
MARY LOUISE GERALTS
Other Name Type
Doing Business As (3)
Gender
Female
Entity Type
Individual
Location Address
600 WALNUT RIDGE DR HARTLAND, WI 53029
Location Phone
(262) 369-6902
Location Fax
(262) 369-7041
Mailing Address
PO BOX 735044 CHICAGO, IL 60673
Mailing Phone
(800) 326-2250
Medical School Name
MEDICAL COLLEGE OF WISCONSIN
Graduation Year
1986
Is Sole Proprietor?
No
Enumeration Date
08-20-2006
Last Update Date
08-05-2024
Code Navigator

An internist like Mary Geralts is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
34411
License State
WI
Taxonomy Description
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • HMO Bronze $0 Medical Deductible - HMO
  • HMO Bronze 10000 - HMO
  • HMO Bronze 7500 - HMO
  • HMO Catastrophic 10600 with 3 free PCP visits - HMO
  • HMO Gold 2000 - HMO
  • HMO Gold 2700 - HMO
  • HMO HDHP Silver 5900 - HMO
  • HMO Silver 6000 - HMO
  • HMO Silver 6600 - HMO
  • POS Bronze 7500 - POS
  • CareSource (Common Ground Healthcare) Bronze $0 Ded / $2500 Rx Ded - EPO
  • CareSource (Common Ground Healthcare) Bronze $0 Ded / $2500 Rx Ded - Vision Exam - EPO
  • CareSource (Common Ground Healthcare) Bronze $9600 ($45 PCP Copay) - EPO
  • CareSource (Common Ground Healthcare) Bronze $9600 ($45 PCP Copay) - Vision Exam - EPO
  • CareSource (Common Ground Healthcare) Bronze Standard $7500 - EPO
  • CareSource (Common Ground Healthcare) Bronze Standard $7500 - Vision Exam - EPO
  • CareSource (Common Ground Healthcare) Gold $0 Ded - EPO
  • CareSource (Common Ground Healthcare) Gold $0 Ded - Vision Exam - EPO
  • CareSource (Common Ground Healthcare) Gold $3300 - EPO
  • CareSource (Common Ground Healthcare) Gold $3300 - Vision Exam - EPO
  • Oak $1,300 Gold - PPO
  • Oak $2,000 Standard Gold - PPO
  • QUARTZ GUNDERSEN PERFORMANCE BRONZE $0 MEDICAL DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE BRONZE $10,150 DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE BRONZE (DENTAL & VISION) $0 MEDICAL DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE BRONZE (DENTAL & VISION) $10,150 DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE BRONZE (DENTAL & VISION) STANDARD EASY PRICING - HMO
  • QUARTZ GUNDERSEN PERFORMANCE BRONZE STANDARD EASY PRICING - HMO
  • QUARTZ GUNDERSEN PERFORMANCE CATASTROPHIC $10,600 DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE GOLD $4,000 DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE GOLD (DENTAL & VISION) $4,000 DED - HMO
  • QUARTZ GUNDERSEN PERFORMANCE GOLD (DENTAL & VISION) STANDARD EASY PRICING - HMO
  • UHC Bronze Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, No Referrals) - HMO
  • UHC Bronze Copay Focus+ $0 Indiv Med Ded ($0 Virtual Urgent Care, Dental + Vision, No Referrals) - HMO
  • UHC Bronze Essential ($0 Virtual Urgent Care, No Referrals) - HMO
  • UHC Bronze Standard (No Referrals) - HMO
  • UHC Gold Advantage ($0 Virtual Urgent Care, $5 Tier 2 Rx, No Referrals) - HMO
  • UHC Gold Advantage+ ($0 Virtual Urgent Care, $5 Tier 2 Rx, Dental + Vision, No Referrals) - HMO
  • UHC Gold Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, $5 Tier 2 Rx, No Referrals) - HMO
  • UHC Gold Standard (No Referrals) - HMO
  • UHC Silver Advantage ($0 Virtual Urgent Care, $5 Tier 2 Rx, No Referrals) - HMO
  • UHC Silver Advantage+ ($0 Virtual Urgent Care, $5 Tier 2 Rx, Dental + Vision, No Referrals) - HMO

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
31947900MEDICAID (05)WI 

Medicare Participation & PECOS Enrollment Status

Mary Geralts is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Mary Geralts is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 9537299987

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20100610000581

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Provider Referred Orders for Durable Medical Equipment, Devices & Supplies

The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.

Durable Medical Equipment

  • DME-Other DME (DE017N)

    Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips (HCPCS:A4253)

    10 DME suppliers used 38 Medicare Claims 96 Services Paid

  • DME-Medical/Surgical Supplies (DA000N)

    Lancets, per box of 100 (HCPCS:A4259)

    6 DME suppliers used 15 Medicare Claims 17 Services Paid

  • DME-Other DME (DE017N)

    Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service (HCPCS:K0553)

    2 DME suppliers used 16 Medicare Claims 16 Services Paid

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Administration of influenza virus vaccine

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

This service was performed 61 times for 60 patients

Administration of pneumococcal vaccine

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

This service was performed 21 times for 21 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

This service was performed 206 times for 206 patients

Anticoagulant management of patient taking warfarin

Anticoagulant management with warfarin involves monitoring and adjusting your medication to prevent blood clots while minimizing the risk of bleeding. Regular blood tests measure your response to warfarin, helping adjust your dose if necessary. It's crucial to maintain a consistent diet and promptly report any changes in your health.

This service was performed 19 times for 16 patients

Automated urinalysis test

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

This service was performed 13 times for 13 patients

Blood test, clotting time

A clotting time blood test helps determine how quickly your blood forms clots, a process crucial to stop bleeding. During the test, a small blood sample is taken from your arm. The sample is then analyzed in a lab to see how long it takes for a clot to form.

This service was performed 14 times for 11 patients

Established patient office or other outpatient visit, 20-29 minutes

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 55 times for 51 patients

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 481 times for 251 patients

Influenza vaccine split virus, preservative free

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

This service was performed 59 times for 58 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use

The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.

This service was performed 19 times for 19 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

This service was performed 53 times for 52 patients

Transitional care management services for problem of high complexity

Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.

This service was performed 18 times for 16 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $30.92 for a new patient copayment and $23.85 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 53029 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $123.69
  • Minimum New Patient Price $53.9
  • Maximum New Patient Price $163.24
  • Average New Patient Copayment $30.92
  • Minimum New Patient Copayment $13.47
  • Maximum New Patient Copayment $40.81

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $95.41
  • Minimum Established Patient Price $17.4
  • Maximum Established Patient Price $133.76
  • Average Established Patient Copayment $23.85
  • Minimum Established Patient Copayment $4.35
  • Maximum Established Patient Copayment $33.44

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Mary Geralts is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
WAUKESHA MEMORIAL HOSPITAL725 AMERICAN AVE
WAUKESHA, WI 53188
(262) 928-1000Acute Care Hospitals
OCONOMOWOC MEMORIAL HOSPITAL791 E SUMMIT AVE
OCONOMOWOC, WI 53066
(262) 569-9400Acute Care Hospitals
ASCENSION SE WISCONSIN HOSPITAL5000 W CHAMBERS ST
MILWAUKEE, WI 53210
(414) 447-2130Acute Care Hospitals
AURORA MEDICAL CENTER - SUMMIT36500 AURORA DRIVE
SUMMIT, WI 53066
(262) 434-1600Acute Care Hospitals

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1386759397, we treat the final digit (7) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 73. The final step is to find the difference between that total and the next multiple of ten (80 - 73 = 7).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
3
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
6
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
5
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
3
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
7
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 8 → 16 → 7 7 → 14 → 5 9 → 18 → 9 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 3 + 1 + 6 + 6 + 1 + 4 + 5 + 1 + 8 + 3 + 1 + 8 + 24 = 73

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 73 is 80. The difference is the calculated check digit.

80 - 73 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1386759397.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Durable Medical Equipment & Medical Supplies
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Pharmacist
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Eyewear Supplier
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Eyewear Supplier
600 WALNUT RIDGE DR, SUITE 216
HARTLAND, WI 53029
Internal Medicine (Endocrinology, Diabetes & Metabolism)
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Clinical Neuropsychologist
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Internal Medicine
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Clinical Neuropsychologist
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Psychiatry & Neurology (Neurology)
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Clinical Neuropsychologist
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Family Medicine
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Family Medicine
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Internal Medicine
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Psychiatry & Neurology (Neurology)
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Surgery
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Family Medicine
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Family Medicine
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Internal Medicine
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Internal Medicine
600 WALNUT RIDGE DR
HARTLAND, WI 53029
Nurse Practitioner
600 WALNUT RIDGE DR
HARTLAND, WI 53029

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1386759397, enumerated as an "individual" on August 20, 2006.

The provider is located at 600 WALNUT RIDGE DR HARTLAND, WI 53029 and the phone number is (262) 369-6902.

Internal Medicine with taxonomy code 207R00000X.

The provider might be accepting Accepts: Aspirus Health Plan, CareSource (Common Ground. Please consult your insurance carrier or call the provider to verify.

Mary Geralts is affiliated with: WAUKESHA MEMORIAL HOSPITAL, OCONOMOWOC MEMORIAL HOSPITAL, ASCENSION SE WISCONSIN HOSPITAL and AURORA MEDICAL CENTER - SUMMIT.