John S Mastroni
MD | Ophthalmologist | 37+ years Exp
Medicare Enrolled 2840 Oneil Lane, Eureka
California, 95503
707-443-9777 707-445-1003
Maps & DirectionsJohn S Mastroni is a Eureka, California based Ophthalmologist with 37 years of experience in Ophthalmology. He completed his graduation from Creighton University School Of Medicine in 1989. He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of John S Mastroni is G76915 for Ophthalmology in California.
John S Mastroni has the knowledge and professional skills needed to provide comprehensive eye and vision care. He is medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
Complete Profile:
John S Mastroni speciality, credentials, practice address, contact phone number and fax are as below.
Patients can directly walk in or can call on the below given phone number for appointment.
| Specialization: | Ophthalmology |
| Credentials: | MD |
| Experience: | 37+ years |
| Medical School Attended: | Creighton University School Of Medicine |
| Graduation Year: | 1989 |
| Gender: | Male |
| Accepts Medicare Assignment: | Yes |
| Practice Address: | 2840 Oneil Lane, Eureka,
California, 95503 |
| Phone: | 707-443-9777 |
| Fax: | 707-445-1003 |
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS).
NPI details are as mentioned below.
| PAC ID: | 6507910437 |
| Enrollment ID: | I20090909000181 |
| NPI Number: | 1568420008 |
| NPI Enumeration Date: | 03 May, 2006 |
| NPI Last Update On: | 08 Jul, 2007 |
Medical Licenses:
Doctors can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for John S Mastroni are as mentioned below.
| License Number | Specialization | State | Status | |
| G76915 | Ophthalmology | California | Primary | |
Other Medical Identifiers:
Other legacy medical identifiers associated with John S Mastroni such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
| Identifier | Type | State | Issuer |
| 00G769150 | Medicaid | California | |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | 2840 Oneil Lane,
Eureka, California |
| Zip: | 95503 |
| Phone Number: | 707-443-9777 |
| Fax Number: | 707-445-1003 |
Patients can reach John S Mastroni at
2840 Oneil Lane, Eureka, California or can
call to book an appointment on 707-443-9777.
Comments/ Reviews:
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** Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 13 July, 2026.