April Lynn Diep, DO

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

20A16610 Issued in CA

Practice address

2621 Shadelands Dr
Walnut Creek, CA 94598-2512

Phone

(925) 947-0417

Fax

(925) 947-4379

NPI assigned

Jul 5, 2013

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

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

Family Practice

Education

Western University of Health Sciences College of Dental Med, 2013

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

John Muir Physician NetworkGroup PAC ID 6608789813, 488 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• John Muir Home Health Services Home health agency, Concord, CA, CCN 057276
• Mission Home Health of Contra Costa Home health agency, Concord, CA, CCN 059536
• One Health Home Care, Inc Home health agency, Livermore, CA, CCN 559096
• John Muir Medical Center - Walnut Creek Campus Hospital, Walnut Creek, CA, CCN 050180
• John Muir Medical Center - Concord Campus Hospital, Concord, CA, CCN 050496

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: adiep123437@ehr.johnmuirhealth.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.

• John Muir Physician Network

  • General Practice Physician
  • Walnut Creek, CA
  • NPI 1841407665
  Medicare reassignment Care Compare group NPD
• John Muir Health

  • Rehabilitation Hospital Unit
  • Walnut Creek, CA
  • NPI 1447269303
  NPD (past)
• John Muir Health

  • General Acute Care Hospital
  • Concord, CA
  • NPI 1801821376
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Healthy Living at Home East Bay LLC

  • Home Health Agency
  • Concord, CA
  • NPI 1538411632
  Care Compare affiliation
• John Muir Health

  • Home Health Agency
  • Concord, CA
  • NPI 1437161452
  Care Compare affiliation
• John Muir Health

  • General Acute Care Hospital
  • Walnut Creek, CA
  • NPI 1740215219
  Care Compare affiliation
• John Muir Health

  • General Acute Care Hospital
  • Concord, CA
  • NPI 1801821376
  Care Compare affiliation
• One Health Home Care Inc

  • Home Health Agency
  • Livermore, CA
  • NPI 1730616624
  Care Compare affiliation

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

{
    "created_epoch": "1372982400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781308800000",
    "number": "1871933895",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2621 SHADELANDS DR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982512",
            "telephone_number": "925-947-0417",
            "fax_number": "925-947-4379"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2621 SHADELANDS DR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982512",
            "telephone_number": "925-947-0417",
            "fax_number": "925-947-4379"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DIEP",
        "first_name": "APRIL",
        "middle_name": "LYNN",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2013-07-05",
        "last_updated": "2026-06-13",
        "certification_date": "2026-06-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "20A16610",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Karen Stefany Diaz
• Mikayla Wei King Diaz
• Ryan M Diaz
• Natalie Grace Dicks, IBCLC, RNC
• Cole James Dickson
• Christina T Diep, DDS
• Benjamin Edward Dierauf, L.AC.
• Keren Arlene Dietz Roberts, PMHNP
• Hao My Dieu, PHARMD
• Ethan Dike

• Family Medicine Physician in Walnut Creek, CA
• Providers in Walnut Creek, CA by specialty
• Family Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 13, 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.