Oscar Jefferson Gryn, DO

Primary specialty

Otolaryngology PhysicianTaxonomy code 207Y00000X

License

OS023651 Issued in PA

Practice address

542 N Lewis Rd Ste 101
Limerick, PA 19468-3521

Phone

(610) 323-1550

NPI assigned

Mar 28, 2021

Sex

Male

Sole proprietor

Yes

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 PA

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

Otolaryngology

Education

Des Moines University of Osteopathic Medicine and Health Sciences, 2021

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

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.

• Pinnacle ENT Alliance LLC

  • Otolaryngology/Facial Plastic Surgery Physician
  • Wayne, PA
  • NPI 1538230313
  Medicare reassignment NPD

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

{
    "created_epoch": "1616889600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789948800000",
    "number": "1619554292",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 822336",
            "city": "PHILADELPHIA",
            "state": "PA",
            "postal_code": "191822336",
            "telephone_number": "610-323-1550"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "542 N LEWIS RD STE 101",
            "city": "LIMERICK",
            "state": "PA",
            "postal_code": "194683521",
            "telephone_number": "610-323-1550"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GRYN",
        "first_name": "OSCAR",
        "middle_name": "JEFFERSON",
        "credential": "DO",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2021-03-28",
        "last_updated": "2026-09-21",
        "certification_date": "2026-09-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Y00000X",
            "taxonomy_group": "",
            "desc": "Otolaryngology",
            "state": "PA",
            "license": "OS023651",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Dana Gold, MAC, LPC
• Derek Grabert, PA-C
• Greater Philadelphia Spine and Pain, PC
• Marcia Griebel, RN
• Kathryn Michniewicz Grim
• Tracey L Gunther, BCBA
• Katrina Harman, LPC
• Meghan Michelle Hattersley
• Michele P Hess, MSPT
• Elizabeth Higgins, LCSW

• Otolaryngology Physician in Limerick, PA
• Providers in Limerick, PA by specialty
• Otolaryngology Physician in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 21, 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.