GERALD MAHON M.D.
NPI 1154302289
Internal Medicine - Geriatric Medicine in Saint Louis, MO
NPI Status: Active since November 07, 2005
Contact Information
1201 S GRAND BLVD
SAINT LOUIS, MO
ZIP 63104
Phone: (314) 977-8462
Fax: (314) 977-3370
- Individual
- Male
- Internal Medicine
- Geriatric Medicine
- PECOS Enrolled
About GERALD MAHON
This page provides the complete NPI Profile along with additional information for Gerald Mahon, an internist established in Saint Louis, Missouri with a medical specialization in Internal Medicine, focusing in geriatric medicine . The healthcare provider is registered in the NPI registry with number 1154302289 assigned on November 2005. The practitioner's primary taxonomy code is 207RG0300X with license number R4H74 (MO). The provider is registered as an individual and his NPI record was last updated 5 years ago.
- NPI
- 1154302289
- Provider Name
- GERALD MAHON M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1201 S GRAND BLVD SAINT LOUIS, MO 63104
- Location Phone
- (314) 977-8462
- Location Fax
- (314) 977-3370
- Mailing Address
- 1008 S SPRING AVE FL 2 SAINT LOUIS, MO 63110
- Mailing Phone
- (314) 977-8462
- Mailing Fax
- (314) 977-3370
- Is Sole Proprietor?
- No
- Enumeration Date
- 11-07-2005
- Last Update Date
- 03-12-2021
- Code Navigator
An internist like Gerald Mahon 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
Secondary Locations
- 13303 Tesson Ferry Rd
Saint Louis, MO 63128
(314) 842-4744
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 Geriatric Medicine
- Taxonomy Code
- 207RG0300X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- R4H74
- License State
- MO
- Taxonomy Description
- An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
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.
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 |
|---|---|---|---|
| A12432 | OTHER (01) | MO | MERCY |
| 138654 | OTHER (01) | MO | HEALTHLINK |
| 39965 | OTHER (01) | MO | GHP |
| 0400402 | OTHER (01) | MO | UHC |
| 17644 | OTHER (01) | MO | BCBS |
| 000000011339 | OTHER (01) | MO | ESSENCE |
| 4136351 | OTHER (01) | MO | AETNA |
Medicare Participation & PECOS Enrollment Status
Gerald Mahon 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
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-Oxygen and Supplies (DC002N)
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate (HCPCS:E1390)
2 DME suppliers used 18 Medicare Claims 19 Services Paid
DME-Other DME (DE000N)
Pharmacy dispensing fee for inhalation drug(s); per 30 days (HCPCS:Q0513)
3 DME suppliers used 12 Medicare Claims 12 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.
Established patient custodial care facility, group care, or assisted living visit, typically 25 minutes
Established patient custodial care facility, group care, or assisted living visit, typically 40 minutes
Established patient office or other outpatient visit, 10-19 minutes
Established patient office or other outpatient visit, 20-29 minutes
Established patient office or other outpatient visit, 30-39 minutes
Follow-up hospital inpatient care per day, typically 25 minutes
Follow-up hospital inpatient care per day, typically 35 minutes
Follow-up nursing facility visit per day, typically 15 minutes
Follow-up nursing facility visit per day, typically 25 minutes
Hemoglobin a1c level
Initial hospital inpatient care per day, typically 30 minutes
New patient custodial care facility, group care, or assisted living visit, typically 30 minutes
This refers to a routine medical visit for an established patient living in a group care facility, custodial care, or assisted living. The visit typically lasts 25 minutes and includes a check-up and discussion about ongoing healthcare needs.
This service was performed 11 times for 11 patientsThis is a routine visit for established patients residing in care facilities like nursing homes or assisted living. The visit typically lasts about 40 minutes, during which the healthcare provider checks your overall health, discusses any concerns, and adjusts care plans as needed.
This service was performed 25 times for 22 patientsThis is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
This service was performed 40 times for 38 patientsThis 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 19 times for 19 patientsThis 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 44 times for 41 patientsFollow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
This service was performed 22 times for 18 patientsFollow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
This service was performed 23 times for 15 patientsA follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
This service was performed 33 times for 27 patientsA follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
This service was performed 101 times for 50 patientsHemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
This service was performed 15 times for 13 patientsInitial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
This service was performed 11 times for 11 patientsThis service involves a 30-minute visit to a new patient in a custodial care facility, group care, or assisted living setting. The purpose is to assess the patient's health status, discuss care plans, and address any concerns. The visit aims to ensure optimal health and well-being.
This service was performed 22 times for 22 patientsPhysician Visit Costs
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 63104 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99205
- Average New Patient Price $169.38
- Minimum New Patient Price $55.65
- Maximum New Patient Price $169.38
- Average New Patient Copayment $42.34
- Minimum New Patient Copayment $13.91
- Maximum New Patient Copayment $42.34
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $98.37
- Minimum Established Patient Price $17.76
- Maximum Established Patient Price $137.92
- Average Established Patient Copayment $24.59
- Minimum Established Patient Copayment $4.44
- Maximum Established Patient Copayment $34.48
* 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.
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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 1154302289, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 51 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SAINT LOUIS, MO 63104
SAINT LOUIS, MO 63104
SAINT LOUIS, MO 63104
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1154302289, enumerated as an "individual" on November 07, 2005.
The provider is located at 1201 S GRAND BLVD SAINT LOUIS, MO 63104 and the phone number is (314) 977-8462.
Internal Medicine with taxonomy code 207RG0300X and a focus in Geriatric Medicine.
The provider might be accepting Accepts: Medicare, Medicaid, Blue Cross Blue Shield and. Please consult your insurance carrier or call the provider to verify.
