Zachary Thomas Fellows, M.D.

Primary specialty

Rheumatology PhysicianTaxonomy code 207RR0500X

License

A144510 Issued in CA

Practice address

6120 Paseo del Norte Ste L2
Carlsbad, CA 92011-1149

Phone

(760) 891-4687

Fax

(760) 684-8715

NPI assigned

May 24, 2014

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

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 1

Specialty

Rheumatology

Education

Other, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

22.01 of 100Reported as individual

Quality

0

Improvement activities

0

Cost

73.36

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: zachary.fellows.p1@direct.arthritis.nextgenshare.com

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.

• Synergy Rheumatology PC

  • Rheumatology Physician
  • Carlsbad, CA
  • NPI 1124893201
  Medicare reassignment NPD Authorized official

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

{
    "created_epoch": "1400889600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768694400000",
    "number": "1154733152",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6120 PASEO DEL NORTE STE L2",
            "city": "CARLSBAD",
            "state": "CA",
            "postal_code": "920111149",
            "telephone_number": "760-891-4687",
            "fax_number": "760-684-8715"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6120 PASEO DEL NORTE STE L2",
            "city": "CARLSBAD",
            "state": "CA",
            "postal_code": "920111149",
            "telephone_number": "760-891-4687",
            "fax_number": "760-684-8715"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FELLOWS",
        "first_name": "ZACHARY",
        "middle_name": "THOMAS",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-05-24",
        "last_updated": "2026-01-18",
        "certification_date": "2026-01-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RB0002X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Obesity Medicine",
            "state": "CA",
            "license": "A144510",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A144510",
            "primary": false
        },
        {
            "code": "207RR0500X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Rheumatology",
            "state": "CA",
            "license": "A144510",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Rachel Fazekas, LMFT
• Fazeli DDS Inc.
• Afsoon Fazeli, DDS, MSD
• William Fecteau
• Jose Manulete Feliciano III, PT
• Michele Felten, APCC
• Femme Strong Pelvic Health & Wellness
• Alison Ferguson
• Meghan Fernandes, LCSW
• Laura G Fernandez I, BT

• Rheumatology Physician in Carlsbad, CA
• Providers in Carlsbad, CA by specialty
• Rheumatology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 18, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.