Individual provider Active NPI

Arun Nag Santhosh Mallapareddi

  • Sleep Medicine (Family Medicine) Physician
  • Ashburn, VA
National Provider Identifier
1780048264
Registry record updated Feb 23, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Sleep Medicine (Family Medicine) PhysicianTaxonomy code 207QS1201X
License
0101283107 Issued in VA
Practice address
44335 Premier PLZ Ste 230
Ashburn, VA 20147-5052
Phone
(571) 577-6806
NPI assigned
Apr 11, 2016
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 23, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Sleep Medicine (Family Medicine) Physician 207QS1201X 0101283107 VA Primary
Family Medicine Physician 207Q00000X 0101283107 VA
Family Medicine Physician 207Q00000X 35.139042 OH

Addresses

Primary practice location

44335 Premier PLZ Ste 230
Ashburn, VA 20147-5052

Mailing address

44335 Premier PLZ Ste 230
Ashburn, VA 20147-5052
Phone (571) 577-6806

Other practice location 1

10100 Fairfax Blvd
Fairfax, VA 22030-2000
Phone (703) 679-1876

Other practice location 2

200 N Glebe Rd Ste 316
Arlington, VA 22203-3755
Phone (703) 729-3420

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address admin@sigmahealthdpc.com
Direct Messaging Address VAExchange@patientfirstclinics.com Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OH, DC, VA, MD4 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 4

Enrollment IDStateProvider typePAC IDDetails
I20200625002616 OH Practitioner - Family PracticePractitioner - Sleep Medicine 4789968942 Reassigns benefits to 1 organization
I20250610002416 DC Practitioner - Family Practice 4789968942 Reassigns benefits to 3 organizations
I20250624001600 VA Practitioner - Family Practice 4789968942 Reassigns benefits to 3 organizations
I20251211000536 MD Practitioner - Family Practice 4789968942 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Wayne State University School of Medicine, 2015
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Patient First Richmond Medical Group PLLCGroup PAC ID 9931011434, 315 clinicians
Comprehensive Sleep Care Center IncGroup PAC ID 8022171800, shared by 3 NPIs, 16 clinicians

Practice addresses (Care Compare)

10100 Fairfax Blvd
Fairfax, VA 22030-2000
Phone (703) 679-1876

19441 Golf Vista PLZ
Suite 230
Leesburg, VA 20176-8271
Phone (703) 729-3420

200 N Glebe Rd
Suite 316
Arlington, VA 22203-3755
Phone (703) 729-3420

3687 Fettler Park Dr
Dumfries, VA 22025-2049
Phone (703) 729-3420

4080 Lafayette Ctr Dr
Suite 170C
Chantilly, VA 20151-1248
Phone (703) 729-3420

4897 Prince William Pkwy
Suite 102
Woodbridge, VA 22192-5433
Phone (703) 729-3420

5901 Kingstowne Village Pkwy
Suite 101
Alexandria, VA 22315-5881
Phone (703) 729-3420

6000 Executive Blvd
Suite 604
North Bethesda, MD 20852-3830
Phone (703) 729-3420

605 Emancipation Hwy
2B
Fredericksburg, VA 22401-8403
Phone (703) 729-3420

621 Ridgely Ave
Suite 402
Annapolis, MD 21401-1099
Phone (703) 729-3420

8110 Midlothian Tpke
North Chesterfield, VA 23235-5116
Phone (804) 320-8160

9420 Forestwood LN
Suite 202
Manassas, VA 20110-4758
Phone (703) 729-3420

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Varam LLC Family Medicine CurrentSince Jul 1, 2025 Accepting new patients
Comprehensive Sleep Care Center Inc CurrentSince Oct 1, 2025 Accepting new patients
University Hospitals Medical Group Inc CurrentSince Oct 29, 2023 Accepting new patients
Comprehensive Sleep Care Center Inc Current Accepting new patients
Comprehensive Sleep Care Center Inc CurrentSince Oct 1, 2025 Accepting new patients
Comprehensive Sleep Care Center, Inc. CurrentSince Oct 1, 2025 Accepting new patients
Patient First Richmond Medical Group PLLC Family Medicine CurrentSince Jun 1, 2025 Accepting new patients
Patient First Richmond Medical Group PLLC Family Medicine CurrentSince Jun 1, 2025 Accepting new patients

Locations

621 Ridgely Ave
Ste 402
Annapolis, MD 21401

6000 Executive Blvd
Ste 604
Rockville, MD 20852

8055 Mayfield Rd
Ste 105
Chesterland, OH 44026
Phone (440) 214-8024

11100 Euclid Ave
Cleveland Heights, OH 44106

158 W Main Rd
Ste 203
Conneaut, OH 44030
Phone (440) 285-2960

6311 Richmond Hwy
Alexandria, VA 22306
Phone (703) 647-6087

200 N Glebe Rd
Ste 316
Arlington, VA 22203

44335 Premier Plz
Ste 230
Ashburn, VA 20147
Phone (571) 498-0109

4080 Lafayette Center Dr
Ste 170C
Chantilly, VA 20151

10100 Fairfax Blvd
Fairfax, VA 22030
Phone (703) 679-1876

5000 Cox Rd
Glen Allen, VA 23060
Phone (804) 822-4355

601 Potomac Station Dr NE
Leesburg, VA 20176
Phone (703) 840-1396

19441 Golf Vista Plz
Ste 310
Leesburg, VA 20176

19441 Golf Vista Plz
Ste 230
Leesburg, VA 20176
Phone (703) 724-7474

9420 Forestwood Ln
Ste 202
Manassas, VA 20110

8110 Midlothian Tpke
North Chesterfield, VA 23235
Phone (804) 320-8160

4897 Prince William Pkwy
Ste 102
Woodbridge, VA 22192

Interoperability endpoints

  • Direct secure messaging: vaexchange@patientfirstclinics.com
  • Direct secure messaging: amallapareddi21146@ehrdirect.uhhospitals.org

Organizations & group practices 9

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1460332800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771804800000",
    "number": "1780048264",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "44335 PREMIER PLZ STE 230",
            "city": "ASHBURN",
            "state": "VA",
            "postal_code": "201475052",
            "telephone_number": "571-577-6806"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "44335 PREMIER PLZ STE 230",
            "city": "ASHBURN",
            "state": "VA",
            "postal_code": "201475052",
            "telephone_number": "571-577-6806"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "10100 Fairfax Blvd",
            "address_purpose": "LOCATION",
            "city": "Fairfax",
            "state": "VA",
            "postal_code": "220302000",
            "country_code": "US",
            "telephone_number": "703-679-1876",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "200 N Glebe Rd Ste 316",
            "address_purpose": "LOCATION",
            "city": "Arlington",
            "state": "VA",
            "postal_code": "222033755",
            "country_code": "US",
            "telephone_number": "703-729-3420",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MALLAPAREDDI",
        "first_name": "ARUN NAG SANTHOSH",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-04-11",
        "last_updated": "2026-02-23",
        "certification_date": "2026-02-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207QS1201X",
            "taxonomy_group": "",
            "desc": "Family Medicine, Sleep Medicine",
            "state": "VA",
            "license": "0101283107",
            "primary": true
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "VA",
            "license": "0101283107",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "OH",
            "license": "35.139042",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "admin@sigmahealthdpc.com",
            "affiliation": "N",
            "address_1": "44335 Premier Plz Ste 23044335",
            "city": "Ashburn",
            "state": "VA",
            "country_code": "US",
            "postal_code": "201475051",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "VAExchange@patientfirstclinics.com",
            "affiliation": "N",
            "endpointDescription": "email",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "address_1": "10100 Fairfax Blvd",
            "city": "Fairfax",
            "state": "VA",
            "country_code": "US",
            "postal_code": "220302000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Ashburn, VA

Sources for this page

Verify at the official NPI Registry.