DR. PETER HOWARD RHEINSTEIN M.D.
NPI 1962457853
Family Medicine - Geriatric Medicine in Severna Park, MD
NPI Status: Active since May 23, 2006
Contact Information
621 HOLLY RIDGE RD
SEVERNA PARK, MD
ZIP 21146
Phone: (410) 647-9500
Fax: (410) 647-6135
- Individual
- Male
- Family Medicine
- Geriatric Medicine
About PETER RHEINSTEIN
This page provides the complete NPI Profile along with additional information for Peter Rheinstein, a primary care provider established in Severna Park, Maryland with a medical specialization in Family Medicine, focusing in geriatric medicine . The healthcare provider is registered in the NPI registry with number 1962457853 assigned on May 2006. The practitioner's primary taxonomy code is 207QG0300X with license number MD8060 (DC). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1962457853
- Provider Name
- DR. PETER HOWARD RHEINSTEIN M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 621 HOLLY RIDGE RD SEVERNA PARK, MD 21146
- Location Phone
- (410) 647-9500
- Location Fax
- (410) 647-6135
- Mailing Address
- 621 HOLLY RIDGE RD SEVERNA PARK, MD 21146
- Mailing Phone
- (410) 647-9500
- Mailing Fax
- (410) 647-6135
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 05-23-2006
- Last Update Date
- 09-11-2025
- Code Navigator
A primary care provider (PCP) like Peter Rheinstein sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, 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
Family Medicine Geriatric Medicine
- Taxonomy Code
- 207QG0300X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- MD8060
- License State
- DC
- Taxonomy Description
- A family medicine physician with 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.
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 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | D16565 (MD) |
| 2 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | MD8060 (DC) |
| 3 | 207Q00000X | Allopathic & Osteopathic Physicians | Family Medicine | G16665 (CA) |
| 4 | 207QG0300X | Allopathic & Osteopathic Physicians | Family Medicine | D16565 (MD) |
| 5 | 207QG0300X | Allopathic & Osteopathic Physicians | Family Medicine | G16665 (CA) |
| 6 | 208U00000X | Allopathic & Osteopathic Physicians | Clinical Pharmacology | D16565 (MD) |
| 7 | 208U00000X | Allopathic & Osteopathic Physicians | Clinical Pharmacology | MD8060 (DC) |
| 8 | 208U00000X | Allopathic & Osteopathic Physicians | Clinical Pharmacology | G16665 (CA) |
| 9 | 209800000X | Allopathic & Osteopathic Physicians | Legal Medicine | D16565 (MD) |
| 10 | 209800000X | Allopathic & Osteopathic Physicians | Legal Medicine | MD8060 (DC) |
| 11 | 209800000X | Allopathic & Osteopathic Physicians | Legal Medicine | G16665 (CA) |
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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 1962457853, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).
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 67 is 70. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1962457853, enumerated as an "individual" on May 23, 2006.
The provider is located at 621 HOLLY RIDGE RD SEVERNA PARK, MD 21146 and the phone number is (410) 647-9500.
Family Medicine with taxonomy code 207QG0300X and a focus in Geriatric Medicine.
