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Edit this profileAt a glance
- 1124 Mace Ave, Baltimore, MD 21221
About John Loh
John Loh practices internal medicine in Baltimore, MD. John is a 1984 graduate of Michigan State University College of Human Medicine. Medicare claims data shows John provided 2,108 services to 1,380 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit, and administration of a standardized, evidence-based social determinants of health risk assessment tool, 5-15 minutes. The provider's National Provider Identifier (NPI) is 1306852827.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (410) 391-6996
- Email not available
Practice Locations
1124 MACE AVE
Baltimore, MD 21221
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive and evaluation
- Medication management
- Post-hospital transitional care
Screening and diagnostic testing
Bones & Joints
Brain and nerves
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
Exams & Consultations
Heart & Circulation
Heart health
- Cardiac Stress Test Referral
Imaging referral
- Abdominal Ultrasound Referral
Immunizations
Lab tests
Lungs & Breathing
- At-Home Sleep Study Order
Metabolic & Weight
- Weight Loss Injections and Medication
Minor procedures
Office procedures
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Pain management
Preventive & Routine Care
Screenings & Diagnostics
Sexual health
Procedures Most Often Billed to Medicare
2,108 services · 1,380 patients · 20 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of impacted ear wax | Procedure | 69210 |
17 | As often as other peers in Internal Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
77 | More often than most peers in Internal Medicine |
| Influenza vaccine, trivalent, split virus, preservative-free, 0.5 ml dosage | Treatment | 90656 |
69 | More often than most peers in Internal Medicine |
| Influenza vaccine, trivalent derived from recombinant dna | Treatment | 90673 |
47 | More often than most peers in Internal Medicine |
| Respiratory infectious agent detection by rna for severe acute respiratory syndrome coronavirus 2 (covid 19), influenza a, influenza b, and respiratory syncytial virus, upper respiratory specimen, each reported as detected or not detected | 0241U |
54 | More often than most peers in Internal Medicine | |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
807 | More than most peers in Internal Medicine |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
201 | More often than most peers in Internal Medicine |
| Administration of a standardized, evidence-based social determinants of health risk assessment tool, 5-15 minutes | Billing code | G0136 |
201 | More than most peers in Internal Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
121 | More often than most peers in Internal Medicine |
| Administration of influenza virus vaccine | Billing code | G0008 |
118 | More than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 32 related providers in 4 groups
Other internists in Baltimore 8
Same specialty, same city.
Trained at Michigan State University College of Human Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1984 at Michigan State University College of Human Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of impacted ear wax 8
Providers in MD who bill this service to Medicare most often.
Common questions
What is John Loh's specialty?
John Loh is an internist in Baltimore, MD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where can I find John Loh?
John Loh is listed at 1124 Mace Ave, Baltimore, MD 21221. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact John Loh?
The number on file is (410) 391-6996. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for John Loh?
John Loh's National Provider Identifier is 1306852827. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is John Loh's education?
John Loh attended Michigan State University College of Human Medicine, graduating in 1984. This comes from the CMS National Downloadable File.
CMS public data
How much experience does John Loh have?
John Loh has 42 years experience. Calculated from a graduation year of 1984, reported in the CMS National Downloadable File.
CMS public data
What is John Loh known for?
According to Medicare billing data, John Loh performs procedures including removal of impacted ear wax; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and influenza vaccine, trivalent, split virus, preservative-free, 0.5 ml dosage, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is John Loh's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John Loh. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.