Johanna E. Letts, OD
- Medicare patients, 2024
- 204
- Part D claims, 2024
- 67
- Hospital affiliations
- 1
- Industry payments
- $152
- Medical group
- 1
- Practice address
- 301 Saint Paul Place, Baltimore, MD 21202
- Practice phone
- Call (410) 332-9237
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Johanna Letts' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Johanna E. Letts is an optometrist in Baltimore, Maryland
Johanna Letts practices at Mercy Medical Center in Baltimore, Maryland, part of Mercy Medical Center.
Johanna Letts' NPI, 1558319707, was assigned on May 4, 2006. Johanna Letts graduated from Pennsylvania College of Optometry in 1997. Johanna Letts holds Maryland license TA1492.
- NPI
- 1558319707NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042448193
- NPI enumeration date
- May 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (410) 332-9237
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Johanna E. Letts practices at Mercy Medical Center in Baltimore, Maryland
Johanna Letts' primary practice is Mercy Medical Center, at 301 Saint Paul Place, Baltimore, MD 21202 in Baltimore City. The practice phone is (410) 332-9237.
- Mercy Medical Center301 Saint Paul Place, Baltimore, MD 21202 · Baltimore CityPhone(410) 332-9237
Source: Dmand AI Affiliation Data
Johanna E. Letts is affiliated with 2 sites of care and 1 medical group
Johanna Letts' primary practice is Mercy Medical Center in Baltimore, Maryland, part of Mercy Medical Center. Dmand AI also links Johanna Letts to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Johanna E. Letts' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Johanna Letts practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mercy Medical Center and 6.2K+ hospitals, with verified contacts in the same login.
Johanna E. Letts is one of 562 optometrists in Maryland
Optometrist is Johanna Letts' primary specialty in the NPI Registry, under taxonomy code 152W00000X. Johanna Letts is licensed in Maryland.
Specialties and state licenses
- Optometrist, MarylandPrimary
Optometrists near Johanna Letts
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Johanna E. Letts treated 204 Medicare patients in 2024, average age 74
CMS counts 204 Medicare patients who saw Johanna Letts in 2024. The largest group is 65 to 74, with 118 patients. 75% of them have high cholesterol, and 58% have high blood pressure. Their average risk score is 0.75, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Johanna Letts' median patient age at 71, with 66% women.
Johanna Letts' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Johanna Letts' Medicare patients by sex, 2024
- Women13868%
- Men6632%
Chronic conditions among Johanna Letts' Medicare patients, 2024
- High cholesterol75%
- High blood pressure58%
- Arthritis35%
- Osteoporosis22%
- Ischemic heart disease20%
- Diabetes16%
- Anxiety15%
- Mood disorders14%
Share of Medicare patients with each condition. A patient can have several.
Johanna Letts' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women66%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Johanna E. Letts wrote 67 Medicare Part D claims in 2024
In 2024, Johanna Letts wrote 67 Medicare Part D claims for 31 patients. 30% of them were for generic drugs.
Johanna Letts' Part D claims by kind of drug, 2024
- Generic20 claims30%
- Brand-name47 claims70%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Johanna E. Letts takes part in Medicare
Johanna Letts accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Johanna E. Letts received $152 in industry payments in 2025
CMS Open Payments shows 6 general payments to Johanna Letts from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Tarsus Pharmaceuticals, Inc. paid the most, $112.
Companies that paid Johanna Letts the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Johanna E. Letts graduated from Pennsylvania College of Optometry
Johanna Letts graduated from Pennsylvania College of Optometry in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Johanna E. Letts's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Johanna E. Letts
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Johanna E. Letts' NPI number?
Johanna E. Letts' NPI number is 1558319707. It was assigned on May 4, 2006, and it is active in the NPI Registry.
What does Johanna E. Letts specialize in?
Johanna E. Letts is an optometrist in Baltimore, Maryland. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Johanna E. Letts practice?
Johanna Letts practices at 301 Saint Paul Place, Baltimore, MD 21202. Johanna Letts' primary practice is Mercy Medical Center in Baltimore, Maryland, part of Mercy Medical Center. Dmand AI also links Johanna Letts to 1 group practice or clinic and 1 medical group.
What is Johanna E. Letts' office phone number?
The practice phone on file for Johanna Letts is (410) 332-9237.
What is Johanna E. Letts' medical license number?
Johanna Letts holds Maryland license TA1492.
Which hospitals is Johanna E. Letts affiliated with?
Johanna Letts practices at Mercy Medical Center in Baltimore, Maryland.
Does Johanna E. Letts accept Medicare?
Yes. CMS lists Johanna Letts as accepting Medicare assignment.
How many Medicare patients does Johanna E. Letts see?
CMS counts 204 Medicare patients who saw Johanna Letts in 2024, with an average age of 74.
Where did Johanna E. Letts go to medical school?
Johanna Letts graduated from Pennsylvania College of Optometry in 1997.
Has Johanna E. Letts received payments from drug or device companies?
CMS Open Payments shows $152 in general payments to Johanna Letts from 3 companies from 2025 to 2025. The largest total came from Tarsus Pharmaceuticals, Inc.
How long has Johanna E. Letts been practicing?
Johanna Letts graduated from medical school in 1997, 29 years ago.
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