DR. RONALD CHARLES MAY (M.D.) – Ophthalmology Physician, NPI 1447250949

Ophthalmology Physician

DR. RONALD CHARLES MAY (M.D.) is a healthcare provider. based in Deerfield, Illinois. specializing in Ophthalmology Physician. They hold the professional credentials M.D.. They hold a License No. 036040593 (IL). The NPI Number for DR. RONALD CHARLES MAY (M.D.) is 1447250949

Main info

Male

63 Years Of Experience

Accepts Medicare Assignment

Name

DR. RONALD CHARLES MAY (M.D.)

NPI

1447250949

Phone

(847) 945-6770

Address

740 WAUKEGAN RD

Enumeration Date

26 July 2005

Last Update Date

4 September 2018

Doctor Profile

Medical School Name

R FRANKLIN UNIVERSITY OF MED & SCI/CHICAGO MEDICAL SCHOOL

Secondary Phone

8479456770132

Graduation Year

1963 (63 years ago)

PAC ID

8426180274

Group Practice PAC ID

0547392383

Professional Enrollment ID

I20100714001006

Data current as of

19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology

Experience58

Completeness75

Years active:20State licenses:2Digital endpointsOther names

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Provider Addresses for DR. RONALD CHARLES MAY (M.D.)

740, Waukegan Road, Deerfield, Illinois, 60015, United States
SUITE 360
DEERFIELD, IL 600154374
Phone: (847) 945-6770
Fax: (847) 945-3159
Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCS	Description	Services	Beneficiaries	Medicare allowed
99214	Established patient office or other outpatient visit, 30-39 minutes	156	155	$0
99213	Established patient office or other outpatient visit, 20-29 minutes	140	114	$0
92014	Established patient complete exam of visual system	106	106	$0
92133	Imaging of optic nerve	40	40	$0
92083	Exam of visual field with extended testing	30	29	$0

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Insurance plans in this area (ZIP 60015)

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Provider's Procedures

DR. RONALD CHARLES MAY (M.D.) performs procedures in Ophthalmology Physician. See the list of HCPCS codes below.

Specialty	Practice State	HCPCS Code	Description	Service Count	Beneficiary Count
OPHTHALMOLOGY	IL	92012	Eye and medical examination for diagnosis and treatment, established patient	274	219
OPHTHALMOLOGY	IL	92083	Measurement of field of vision during daylight conditions	107	97

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.

PAC ID: 0547392383View full group profile

Name	Specialty	State
AGNIESZKA G CANTRE	O P H T H A L M O L O G Y	IL
DR. MITCHELL L WARREN (M.D.)	O P H T H A L M O L O G Y	IL

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Frequently asked questions

Is DR. RONALD CHARLES MAY (M.D.) listed with a National Provider Identifier?

Yes — DR. RONALD CHARLES MAY (M.D.) has NPI 1447250949 on file in the registry.

Is there an active status for DR. RONALD CHARLES MAY (M.D.)?

For scheduling context, DR. RONALD CHARLES MAY (M.D.) is shown as active in the registry.

What kind of doctor is DR. RONALD CHARLES MAY (M.D.)?

DR. RONALD CHARLES MAY (M.D.) is associated with Ophthalmology Physician in the directory — Clinical services aligned with this taxonomy classification.

Is DR. RONALD CHARLES MAY (M.D.) located near Deerfield?

DR. RONALD CHARLES MAY (M.D.) currently maps to Deerfield, Illinois in this extract.

Does DR. RONALD CHARLES MAY (M.D.) accept insurance?

Insurance participation is not part of the core NPI extract — call the plan or office to confirm.