MRS. KAREN JOHANNA WALCH RPH
NPI 1871445320
Pharmacist - Ambulatory Care in Saint Louis, MO
NPI Status: Active since February 09, 2026
Contact Information
3023 N BALLAS RD STE 100D
SAINT LOUIS, MO
ZIP 63131
Phone: (314) 657-9008
Fax: (314) 921-7502
- Individual
- Female
- Pharmacist
- Ambulatory Care
About KAREN WALCH
This page provides the complete NPI Profile along with additional information for Karen Walch, a provider established in Saint Louis, Missouri with a medical specialization in Pharmacist, focusing in ambulatory care . The healthcare provider is registered in the NPI registry with number 1871445320 assigned on February 2026. The practitioner's primary taxonomy code is 1835P2201X with license number 296559 (IL). The provider is registered as an individual and her NPI record was last updated February 2026.
- NPI
- 1871445320
- Provider Name
- MRS. KAREN JOHANNA WALCH RPH
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 3023 N BALLAS RD STE 100D SAINT LOUIS, MO 63131
- Location Phone
- (314) 657-9008
- Location Fax
- (314) 921-7502
- Mailing Address
- 14500 SINKS RD FLORISSANT, MO 63034
- Mailing Phone
- (314) 657-9000
- Mailing Fax
- (314) 921-7502
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 02-09-2026
- Last Update Date
- 02-09-2026
- Code Navigator
A pharmacist like Karen Walch fills prescription medications, verifying instructions from physicians and offers expertise in the safe use of prescriptions. Pharmacists instruct patients on how to take a prescribed medicine and educate patients about potential side effects. Pharmacists might also conduct health and wellness screenings, provide immunizations, oversee the medications given to patients, and provide advice on healthy lifestyles.
Location Map
Secondary Locations
- 1 Childrens Pl
Saint Louis, MO 63110
(314) 657-9005 - 1101 W Liberty St
Farmington, MO 63640
(314) 657-9011 - 1234 S Kingshighway Blvd Ste 1900
Saint Louis, MO 63110
(314) 657-9012 - 11125 Dunn Rd
Saint Louis, MO 63136
(314) 657-9002 - 1 Memorial Dr
Alton, IL 62002
(314) 657-9001 - 4921 Parkview Pl Fl 3
Saint Louis, MO 63110
(314) 657-9006
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
Pharmacist Ambulatory Care
- Taxonomy Code
- 1835P2201X
- Type
- Pharmacy Service Providers
- License No.
- 296559
- License State
- IL
- Taxonomy Description
- A licensed pharmacist who has demonstrated specialized knowledge and skill in the provision of integrated, accessible health care services by pharmacists and is accountable for addressing medication needs, developing sustained partnerships with patients, and practicing in the context of family and community.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 1835P2201X | Pharmacy Service Providers | Pharmacist | 044527 (MO) |
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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 1871445320, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).
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 60 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 2 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1871445320, enumerated as an "individual" on February 09, 2026.
The provider is located at 3023 N BALLAS RD STE 100D SAINT LOUIS, MO 63131 and the phone number is (314) 657-9008.
Pharmacist with taxonomy code 1835P2201X and a focus in Ambulatory Care.
