Jennifer Manickam, MD
NPI 1598837247 · Internal Medicine Physician · Vallejo, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jennifer Manickam, MD is a Internal Medicine Physician provider in Vallejo, CA (NPI 1598837247).
Provider details
- NPI number
- 1598837247
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A70859 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
17 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 17 | $101 |
Typical Medicare-allowed amounts for these services range $101–$101 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 86 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 393 | 162 |
| Amlodipine Besylate | 265 | 100 |
| Losartan Potassium | 195 | 77 |
| Levothyroxine Sodium | 191 | 71 |
| Lisinopril | 174 | 74 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 169 | 81 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-15
- Last updated
- 2022-01-10
Frequently asked questions
- What is Jennifer Manickam's NPI number?
- Jennifer Manickam's National Provider Identifier (NPI) is 1598837247, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Manickam's specialty?
- Jennifer Manickam is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jennifer Manickam located?
- Jennifer Manickam's practice location on file with NPPES is 975 Sereno Dr, Vallejo, CA 94589-2441.
- What is Jennifer Manickam's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Manickam is (707) 651-1000.
- Does Jennifer Manickam accept Medicare?
- Jennifer Manickam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jennifer Manickam's NPI active?
- Yes — Jennifer Manickam's NPI (1598837247) is active in the NPPES registry as of the last update on 2022-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.