JOHNS HOPKINS REGIONAL PHYSICIANS LLC
NPI 1710856778
Internal Medicine in Millersville, MD

NPI Status: Active since October 30, 2025

Contact Information

231 NAJOLES RD STE 460
MILLERSVILLE, MD
ZIP 21108
Phone: (443) 883-8563
Fax: (410) 367-2156

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  • Organization
  • Internal Medicine
  • CLIA Number: 21D2213271
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 02-10-2027

About JOHNS HOPKINS REGIONAL PHYSICIANS LLC

This page provides the complete NPI Profile along with additional information for Johns Hopkins Regional Physicians Llc, an internist established in Millersville, Maryland operating as a Internal Medicine. The healthcare provider is registered in the NPI registry with number 1710856778 assigned on October 2025. The practitioner's primary taxonomy code is 207R00000X. The provider is registered as an organization and their NPI record was last updated one year ago. Johns Hopkins Regional Physicians Llc operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization. The authorized official of this NPI record is Nicholas Giarratano (Director, Provider Enrollment)

NPI
1710856778
Provider Name
JOHNS HOPKINS REGIONAL PHYSICIANS LLC
Entity Type
Organization
Location Address
231 NAJOLES RD STE 460 MILLERSVILLE, MD 21108
Location Phone
(443) 883-8563
Location Fax
(410) 367-2156
Mailing Address
6201 GREENLEIGH AVE MIDDLE RIVER, MD 21220
Mailing Phone
(410) 933-0000
Mailing Fax
(410) 367-2156
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
10-30-2025
Last Update Date
10-30-2025
Code Navigator

An internist like Johns Hopkins Regional Physicians Llc 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
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.

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)
1207N00000XAllopathic & Osteopathic Physicians

Dermatology

 

Group Taxonomy 193200000X MULTI-SPECIALTY GROUP

This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

NICHOLAS GIARRATANO

Authorized Official Title
DIRECTOR, PROVIDER ENROLLMENT
Authorized Official Phone
(410) 933-0000

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
21D2213271
Facility Type
Physician Office
Certificate Effective Date
February 11, 2025
Certificate Expiration Date
February 10, 2027
Laboratory Director
DR. JEFFREY T. PACHECO
Certificate Type
Certificate for Provider-Performed Microscopy Procedures (PPMP)
Certificate Type Description
This CLIA certificate is issued to Johns Hopkins Regional Physicians Llc in which a physician, midlevel practitioner or dentist that performs specific microscopy procedures during the course of a patient's visit. A limited list of provider-performed microscopy procedures is included under this certificate type, which are categorized as moderate complexity testing.

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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 1710856778, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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
7
Unchanged
Pos 3
1
Doubled → 2
Pos 4
0
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
5
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
7
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
8
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 1 → 2 8 → 16 → 7 6 → 12 → 3 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 2 + 0 + 1 + 6 + 5 + 1 + 2 + 7 + 1 + 4 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1710856778.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Dermatology
231 NAJOLES RD STE 460
MILLERSVILLE, MD 21108
Physician Assistant
231 NAJOLES RD STE 460
MILLERSVILLE, MD 21108
Internal Medicine
231 NAJOLES RD STE 460
MILLERSVILLE, MD 21108
Dermatology
231 NAJOLES RD STE 460
MILLERSVILLE, MD 21108

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1710856778, enumerated as an "organization" on October 30, 2025.

The provider is located at 231 NAJOLES RD STE 460 MILLERSVILLE, MD 21108 and the phone number is (443) 883-8563.

Internal Medicine with taxonomy code 207R00000X.