Dr. John C Baer , MD
Ophthalmology โข Baltimore, MD
600 N Wolfe St
Baltimore, MD 212870005
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on March 1, 2006; this date does not establish years in practice.
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Published CMS data list 85 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 92014 โ Established patient complete exam of visual system: 34 service units.
- 92250 โ Photography of the retina: 32 service units.
- 99214 โ Established patient outpatient office visit: 19 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 598 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Latanoprost โ 241 prescription fills, including refills.
- Lumigan (Bimatoprost) โ 66 prescription fills, including refills.
- Dorzolamide Hcl โ 64 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 10 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 90% of clinicians listed under Ophthalmology in Baltimore, MD (2024, 121 clinicians with data). Median for this group: 1,626. Middle half: 619 to 3,951.
Fewer Medicare Part B services than 90% of clinicians listed under Ophthalmology in Maryland (2024, 343 clinicians with data). Median for this group: 2,186. Middle half: 951 to 4,557.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 2,267 in 2020 to 85 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
600 N Wolfe St
Baltimore, MD 212870005
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Hanover, PA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Johns Hopkins University. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
University Of Maryland School Of Medicine
1982
What Public CMS Data Show
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
72 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $7,407 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $637 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
1,378 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$64,294 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $27.70 in 2023
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2023.
Years since graduation
44 years (graduated 1982)
CMS Doctors and Clinicians data list 1982 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
May accept Medicare assignment
CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.
Ask the office before your visit. If a clinician does not accept assignment for a service, they can charge up to 15% more than the Medicare-approved amount, and you may be asked to pay the full amount at the visit.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Baer has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Baer as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Baltimore and Maryland
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 90% of clinicians listed under Ophthalmology in Baltimore, MD (2024, 121 clinicians with data). Median for this group: 1,626. Middle half: 619 to 3,951.
Fewer Medicare Part B services than 90% of clinicians listed under Ophthalmology in Maryland (2024, 343 clinicians with data). Median for this group: 2,186. Middle half: 951 to 4,557.
Medicare-allowed amount
A lower Medicare-allowed amount than 90% of clinicians listed under Ophthalmology in Baltimore, MD (2024, 121 clinicians with data). Median for this group: $211,954. Middle half: $65,343 to $447,737.
A lower Medicare-allowed amount than 90% of clinicians listed under Ophthalmology in Maryland (2024, 343 clinicians with data). Median for this group: $276,741. Middle half: $107,212 to $539,563.
Paid by Medicare
A lower Medicare payment amount than 95% of clinicians listed under Ophthalmology in Baltimore, MD (2024, 121 clinicians with data). Median for this group: $151,772. Middle half: $44,902 to $329,515.
A lower Medicare payment amount than 95% of clinicians listed under Ophthalmology in Maryland (2024, 343 clinicians with data). Median for this group: $202,509. Middle half: $72,448 to $395,090.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Ophthalmology in Baltimore, MD (2024, 126 clinicians with data). Median for this group: 450. Middle half: 133 to 1,058.
Close to the middle for clinicians listed under Ophthalmology in Maryland (2024, 360 clinicians with data). Median for this group: 596. Middle half: 210 to 1,407.
Part D drug cost
A higher Part D drug cost than 65% of clinicians listed under Ophthalmology in Baltimore, MD (2024, 126 clinicians with data). Median for this group: $27,303. Middle half: $4,570 to $118,859.
Close to the middle for clinicians listed under Ophthalmology in Maryland (2024, 360 clinicians with data). Median for this group: $61,439. Middle half: $8,807 to $187,238.
210 active clinicians are listed under Ophthalmology with a practice address in Baltimore, MD (588 in Maryland).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Baltimore
0.5% of these 210 clinicians have the CMS telehealth indicator.
31.9% of these 210 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 96% from 2,267 in 2020 to 85 in 2024.
- 2020: 2,267
- 2021: 2,506
- 2022: 2,850
- 2023: 2,628
- 2024: 85
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Medicare-allowed amount
Medicare-allowed amount decreased 98% from $301,026 in 2020 to $7,407 in 2024.
- 2020: $301,026
- 2021: $331,171
- 2022: $325,025
- 2023: $279,580
- 2024: $7,407
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Paid by Medicare
Paid by Medicare decreased 100% from $211,704 in 2020 to $637 in 2024.
- 2020: $211,704
- 2021: $240,424
- 2022: $223,248
- 2023: $186,342
- 2024: $637
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 65% from 1,699 in 2020 to 598 in 2024.
- 2020: 1,699
- 2021: 1,778
- 2022: 2,026
- 2023: 2,223
- 2024: 598
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30-day fills
30-day fills decreased 44% from 2,463 in 2020 to 1,378 in 2024.
- 2020: 2,463
- 2021: 2,698
- 2022: 3,321
- 2023: 3,971
- 2024: 1,378
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Part D drug cost
Part D drug cost decreased 61% from $166,440 in 2020 to $64,294 in 2024.
- 2020: $166,440
- 2021: $172,280
- 2022: $162,181
- 2023: $208,810
- 2024: $64,294
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $17.57 in 2020 to $27.70 in 2023.
- 2020: $17.57
- 2022: $31.60
- 2023: $27.70
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2023 (payments made January 1 โ December 31, 2023): fewer than 11 records totaling $27.70.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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DURYSTA | General | $27.70 |
Source: CMS Open Payments, program year 2023, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
92014
Established patient complete exam of visual system
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34 | 34 | $230.46 | $117.59 |
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92250
Photography of the retina
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32 | 32 | $67.68 | $34.54 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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19 | 19 | $242.88 | $121.27 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Latanoprost | Latanoprost | 241 | 16,729 | $3,789.96 | 108 |
| Lumigan | Bimatoprost | 66 | 4,570 | $35,829.65 | 24 |
| Dorzolamide Hcl | Dorzolamide Hcl | 64 | 5,045 | $1,895.78 | 30 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 60 | 4,550 | $1,865.37 | 30 |
| Timolol Maleate | Timolol Maleate | 53 | 3,822 | $1,909.05 | 22 |
| Travoprost | Travoprost | 47 | 3,085 | $11,947.75 | 20 |
| Brimonidine Tartrate | Brimonidine Tartrate | 30 | 1,380 | $2,812.66 | โ |
| Prednisolone Acetate | Prednisolone Acetate | 15 | 741 | $516.16 | โ |
| Acyclovir | Acyclovir | 11 | 420 | $128.17 | โ |
| Simbrinza | Brinzolamide/Brimonidine Tart | 11 | 490 | $3,599.75 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2024-12-12NUCC Taxonomy Code: 207W00000X
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are 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.
NUCC Taxonomy Code: 207W00000X
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are 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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - OPHTHALMOLOGY
I20110802000442
MD
6204853153
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Johns Hopkins University
10751 Falls Rd, Lutherville, MD 210934517
Phone: 4109553663
Johns Hopkins University
6201 Greenleigh Ave, Middle River, MD 212202004
Johns Hopkins University
1800 Orleans St, Baltimore, MD 212870010
Phone: 4109555000
Johns Hopkins University
4940 Eastern Ave, Baltimore, MD 212242735
Phone: 4105500100
Secondary Practice Locations
250 E Walnut St
Hanover, PA 173312534
Phone: 7176326063
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Nephrology
Doctor of Medicine (M.D.)
Physician Assistant
Student in an Organized Health Care Education/Training Program
Doctor of Medicine (M.D.)
Radiology - Diagnostic Radiology
Doctor of Medicine (M.D.)
Otolaryngology
Doctor of Medicine (M.D.)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 600 N WOLFE ST, BALTIMORE, MD 212870005 (Tel: 4109555000)
Registered at 6201 GREENLEIGH AVE, BALTIMORE, MD 212202004
Ophthalmology (license number reported to NPPES: PA MD418865)
NPI status registered as active in NPPES database
Registered at 250 E WALNUT ST, HANOVER, PA 173312534 (Tel: 7176326063)
Registered at 250 E WALNUT ST, HANOVER, PA 173312534 (Tel: 7176326063)
Recorded as JOHN BAER, M.D.
Ophthalmology (license number reported to NPPES: PA MD418865)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Ophthalmology Specialists in Baltimore
- Angela Gauthier
- Dr. Sneh Dhannawat, MD
- Dr. James Handa, MD
- Dr. Hyunjin Choi, MD
- Dr. Neil Miller, MD
- Dr. Esen Akpek, MD
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Mailing Address
6201 Greenleigh Ave
Baltimore, MD 212202004